1 Origins of the African Slavery in Brazil

Slavery was well-known in most complex societies centuries before the establishment of the Brazilian colony by the Portuguese. Slaves were usually a small part of any labor force in most preindustrial societies and were most commonly tied to the household economy. In a few societies, they were used in agriculture, mining, or other productive enterprises beyond the household economy. No ethnic group escaped enslavement, and all societies treated their slaves as outsiders, rootless and ahistorical individuals ultimately held against their will by the threat of force. Because of their legal position, slaves were also the most mobile labor force available in any society.
Slavery as a system of industrial or market production was a much more limited phenomenon. Most scholars now date its origins for Western society in the centuries immediately prior to the Christian era in the Greek city-states and the emerging Roman Empire of the period. Recent studies have suggested that for slavery as an “industrial” system to exist, there needed to be an important market economy emerging with a limited supply of peasant labor and with abundant sources of slaves – usually via conquest or purchase.
Although slaves did not disappear from Europe until well into the modern period, slavery as a major economic institution collapsed with the barbarian invasions of the fifth to the eighth centuries A.D. The decline of urban markets, the breakdown of long-distance trade, and the increasing self-sufficiency of agriculture created a situation in which slave labor was no longer viable, and peasant agricultural labor again predominated. Slavery was reduced to household and domestic tasks, and the early Middle Ages’ stress on defense and security led to the rise of serfs, were peasants who sacrificed part of their freedom in return for protection by the local elite, and serfs and free peasants became the dominant labor force in Europe.3
At no time during this period of retrenchment did slavery itself disappear from Europe. Among the Germanic peoples on the northern frontiers, it remained important because of constant warfare, and in the non-Christian world of the Mediterranean, slavery experienced a renaissance from the eighth to the thirteenth centuries. The Muslim invasions of the Mediterranean islands and Spain brought the increasing use of slaves in agriculture and industry.
Despite this revival of slavery in the peripheries, slavery in mainland Christian Europe was confined to domestic activities and a few other limited activities. Only in the more advanced Islamic Mediterranean world were slaves used in large numbers. But the subsequent conquest of these states by the northern Iberian Christians resulted more in enserfment than slavery for the captured Muslims. By the end of the Middle Ages, the emerging power of the European economy was fed by an expanding peasant labor force. Although the legal structures originating in Roman law were still intact in Christian Europe, the institution of slavery was not a major force by the time the first Portuguese caravels sighted the Guinean coastline at the beginning of the fifteenth century.
African slaves were also to be found outside the continent as well. With no all-embracing religious or political unity, the numerous states of Africa were free to buy and sell slaves or even to export them to non-African areas. Caravan routes across the Sahara predated the opening up of the African Atlantic coast, and slaves formed a part of Africa's export trade to the Mediterranean from pre-Roman to modern times. Given the widespread use of slaves within Africa, there was also an internal slave trade well before the opening of the West African-Atlantic routes.
It was only with the introduction of sugar production to the eastern Atlantic islands and the opening up of the Western Hemisphere to European conquest at the end of the fifteenth century that a new and important use was found for these slaves. As slaves once again became a major factor in agricultural production within the European context, Portuguese interest in its African trade slowly shifted from a concern with gold and ivory to one primarily stressing slaves.
The first of the Crusades marked the revival of international markets for Christian Europeans and brought them actively into the slave trade. From the tenth to the thirteenth century, Genoese and Venetians expanded into Palestine, Syria, the Black Sea, and the Balkans, adding to their possessions in the eastern Mediterranean islands of Crete and Cyprus. These colonies created a new impetus to slavery. A market in Slavic peoples developed in this period, which gave rise to the use of the term slave to define this status. Slavs, of course, were not the only peoples to be enslaved. On the islands of the eastern Mediterranean, for example, Africans could be found in the early fourteenth century, along with Muslims from North Africa and Asia Minor and Christians from Greece, the Balkans, and northern Europe.
Sugar was introduced from Asia to Europe during the Islamic invasions, but it was the First Crusade at the end of the eleventh century that gave the Christians a chance to become sugar producers in their own right. In the twelfth and thirteenth centuries, Christian estates in Palestine produced sugar with a mixed labor force made up of slaves, villeins, and free workers. After the fall of these lands to the Turks at the end of the thirteenth century, the center of sugar production moved to Cyprus. Here Italian merchants and local rulers used slave and free labor to produce sugar. Cyprus in turn was soon replaced by the Venetian colony of Crete and then by Sicily, which had been producing sugar for the European market since the late eleventh century. With the fall of Palestine and Syrian centers to the Turks, Sicilian production temporarily became preeminent. The Mediterranean coast of Islamic Spain in the late thirteenth and early fourteenth centuries became another important production center for Northern and Western Europe. The westernmost advance of European sugar production reached the southern Portuguese province of the Algarve at the beginning of the fifteenth century. In not all of these cases was sugar produced by slaves, nor were they the exclusive labor force in any particular area. But the identification of slavery with sugar was well established long before the conquest of America. The techniques of sugar production and slave plantation agriculture that developed on the eastern Atlantic islands and later in the New World had their origins in the eastern Mediterranean in the early Middle Ages.7
As long as the Portuguese concentrated their efforts in the regions of Senegambia and the Gold Coast, they integrated themselves into the existing network of Muslim traders. The Muslims had brought these coasts into their own trade networks, and the Portuguese tapped into them through navigable Senegal and Gambia rivers. Even their establishment of São Jorge da Mina (Elmina) on the Gold Coast fit into these developments. But the settlement of the island depot and plantation center of São Tomé in the Gulf of Guinea and the beginning of trade relations with the Kingdom of the Kongo after 1500 substantially changed the nature of the Atlantic slave trade.
The Kongolese were located by the Zaire River (also known as the Congo River) and were unconnected to the Muslim trade before the arrival of the Portuguese. The Portuguese sent priests and advisers to the court of the Kongolese king, and the Kongolese king's representatives were placed on São Tomé. These changes occurred just as the Spanish conquest of the Caribbean islands and the Portuguese settlement of the Brazilian subcontinent were beginning and thus opened the new American market for African slaves. The decimation of the native Arawak and Carib peoples in the Caribbean islands and of the Tupi-Guarani speakers along the Brazilian coast encouraged the early experimentation with African slave labor.
Just as the beginnings of the Portuguese slave trade had complemented a traditional trading system, the first use of Atlantic slave-trade Africans by Europeans was in traditional activities. For the first half-century, the European slave ships that cruised the Atlantic shoreline of Africa carried their slaves to the Iberian Peninsula. The ports of Lisbon and Seville were the centers for a thriving trade in African slaves, and from these centers slaves were distributed rather widely through the western Mediterranean. Although Africans quickly became a significant group within the polyglot slave communities in the major cities of the region, they never became the dominant labor force in the local economies. Even in the southern coastal cities of Portugal, where they were most numerous, they never represented more than 15 percent of the population whereas in other Portuguese and Castilian port cities they usually numbered less than 10 percent. Africans were used no differently than the Moorish slaves who preceded and coexisted with them. African slaves and freedmen were to be found primarily in urban centers and worked mostly in domestic service. The city with the largest number of these African slaves was probably Lisbon, which by the 1550s already had some ten thousand slaves, which rose to some fifteen thousand by the 1630s. In other areas of the Iberian Peninsular, the impact of this first generation of Africans was also significant. About two-thirds of the slaves imported from 1489 to 1516 were African, and an average of about 250 Africans were imported annually.10 By the sixteenth century, such central areas as Portugal and Andalucia already had large slave populations. By 1573, the whole of Portugal was said to contain more than 40,000 slaves, a large number of whom were sub-Saharan Africans.11 But in general, African slaves even in Mediterranean Europe were few in numbers and mostly to be found in urban households. Even the wealthiest European masters owned only a few slaves, and an owner who held fifteen African slaves in sixteenth-century Portugal was considered very unusual. Although slave owners were wealthy aristocrats, institutions, and professionals – many of whom were also major landowners – they infrequently used their slaves in agriculture. Slaves were sometimes to be found in rural occupations but never as a significant element in the local agricultural labor force because of their high costs and the availability of cheap peasant labor.12
Despite the important role these acculturated European-African slaves initially played in establishing the legal, social, and cultural norms in Europe and then again in America for the Africans who followed them, the Christian and Portuguese-speaking African slaves were not the basis for the new European slave labor system being established by the Portuguese in the Atlantic World. It was the Africans brought directly to the previously unpopulated eastern Atlantic islands beginning in the first half of the fifteenth century who were to define the new plantation model of Afro-American slave labor. The use by Europeans of African slaves in plantations evolved not in continental Europe with its acculturated slaves but in these Atlantic islands.
Just as Portugal was opening up the African coast to European penetration, its explorers and sailors were competing with the Spaniards in colonizing the eastern Atlantic islands. By the 1450s, the Portuguese were developing the unpopulated Azores, Madeira, the Cape Verde Islands, and São Tomé while the Spaniards were conquering the inhabited Canary Islands by the last decade of the century. Some of these islands proved ideal for sugar cultivation, so Italian merchants were not slow in introducing the latest in Mediterranean sugar-production techniques. After much experimentation, the most important sugar-producing islands turned out to be Madeira, the Canaries, and São Tomé. Sugar became the prime output on Madeira by the middle of the century, and by the end of the fifteenth century, Madeira had become Europe's largest producer. The Portuguese imported Guanches, the native Canarians, as slaves along with Africans, and by the end of the 1450s, Madeira sugar was being sold on the London market. By 1493, there were eighty sugar mills (or engenhos) on the island refining an average of 18 tons of sugar per annum. Given the terraced nature of the sugar estates, production units were relatively small, however, and the largest plantation held only some eighty slaves, a size that would be considered moderate by Brazilian standards in the next century.
Madeira had a particularly sharp rise and fall in its sugar evolution, and by the 1530s, it was well outdistanced by competition from the other islands. The Canary Islands were the next big entrant into the sugar-production race, and by the first decades of the sixteenth century, the local coastal estates were milling on average of 50 tons per annum. Here, as in Madeira, Guanche natives were first used as slaves, along with Islamic slaves imported from Spain, but very quickly Africans became the dominant slave labor force on the estates. As on Madeira, there were more masters and sugar producers than mill-owners, and an intermediate group of small-scale, slave-owning planters evolved who worked for larger and richer mill-owners who could afford the extremely high costs of establishing sugar refineries.
The final Atlantic island to develop a major sugar plantation slave system was the African coastal island of São Tomé, which, like the Azores, Cape Verde Islands, and Madeira, had been uninhabited prior to Portuguese penetration. By the 1550s, there were some sixty mills in operation on the island and some two thousand plantation slaves, all of whom were Africans. There were also on average at any one time some five to six thousand slaves in slave pens on this entrepôt island being held for transport to Europe and America. Eventually, American competition and its increasingly important role as a transfer and slave-trade provisioning center led to the decline of the São Tomé sugar industry.
It was the establishment of the Portuguese colony of Brazil after 1500 that was to mark the beginnings of the modern slave plantation economy of the Americas, which so influenced hemispheric developments for the next four centuries. Although large slave plantations producing sugar had temporarily appeared in the first decades of the sixteenth century in Santo Domingo, by the middle decades of the century, when Brazilians began to establish their own slave plantations, those of the Spanish Caribbean were in decline and would not revive again until the late eighteenth century.14 It was thus the successful Brazilian system that would influence the pattern of all future commercial agricultural slave regimes. What distinguished this American slave society from most previous slave societies was in fact the domination of slaves as agricultural workers, their vital importance in the production of goods for the international market, and their importance within the local societies. The French, the English, and the late-eighteenth-century Spanish colonies would adopt the Portuguese American slave system as their own, and so the study of African slavery in Brazil is fundamental to the study of the Afro-Brazilian experience of the 4.8 million Africans who arrived on its shores. This history is also crucial if one is to understand the experience of the overwhelming majority of Afro-Americans even in the Northern Hemisphere.
There has been an intense recent debate in the literature about why Africans became the primary group enslaved in the Americas, which would eventually cause Americans to equate skin color with slave status for the next four centuries. Some have suggested a special cultural or racial bias of the Europeans that allowed them to enslave Africans. Yet this seems a very strange argument given the long and intimate contact that Europeans had with Africans from preclassical times to the early modern period and the integration of these African slaves into a multiethnic, multireligious, and multicolored slave population in continental Europe and the Eastern Atlantic islands well before the opening of the Americas to European conquest and colonization. But the increasing cost of non-African slaves does offer a possible explanation. The rise of the Ottoman Empire in the eastern Mediterranean and the consolidation of a powerful independent Moroccan state in North Africa closed off or made more costly traditional sources of slaves from these regions. At the same time, the opening up of water transport to sub-Saharan markets made African slaves considerably cheaper than they had been via the Saharan caravan routes. Enslavement of non-Africans did not end, as the famous existence of Christian slaves in North Africa well into the eighteenth century demonstrated, but it was no longer significant in the European slave markets by the middle of the sixteenth century. Given the steady export of West African gold and ivories and the development of Portugal's enormous Asiatic trading empire, the commercial relations between Western Africa and Europe now became common and cheap. Western Africans brought by sea had already replaced most other ethnic and religious groups in the European slave markets by the middle of the sixteenth century. Although Iberians initially enslaved Canary Islanders, these were later freed, as were the few Indians who were brought from America. The Muslims who had been enslaved for centuries were no longer significant as they disappeared from the Iberian Peninsula itself due to these powerful Muslim states in the Maghreb region, which closed the trade in Muslims to easy Christian European exploitation. In turn, the expansion of the Turks in the eastern Mediterranean closed off traditional Slavic and Balkan sources for slaves to Western Europeans, a move supported by the Roman Catholic Church that sought an end to Christians enslaving other Christians. On the other hand, the growing efficiency of the Atlantic slave traders, the dependability of African slave supply, and the decline of prices explain why Africans would became the major available source of slave labor for sixteenth-century Europe.
But why was there a demand for slaves in the first place? This is a more difficult question to answer. It is evident that the classic equation in all of America was that for the European conquerors, land was cheap and labor was costly.16 Yet the existence of at least some twenty to twenty-five million American Indians in 1492 would seem to suggest that the Europeans would have an abundant supply of labor available for the exploitation of their new colonies.17 Moreover, Europe itself was experiencing major population growth in the sixteenth century and seemingly might have provided the manpower needed to develop these American colonies. Yet despite these alternative labor supplies, America became the great market for an estimated 10.5 million African slaves who arrived in the course of the next five centuries, and it was in the New World that African slavery most flourished under European rule. Until the 1830s, more Africans than Europeans crossed the Atlantic annually and, as late as 1750, it was estimated that more than three-quarters of the emigrants to America were African slaves.18
Why did Europeans turn to Africans to populate their mines, factories, and farms in such numbers if they had access to conquered Indians and large numbers of poor within their own borders? Initially, it appeared as though the few thousand Iberian conquistadors would turn toward Indian slavery as the major form of labor in America. Already using the enslaved labor of Africans, Muslims, and Guanches in Europe and the Atlantic islands, the first Spaniards and Portuguese immediately went about enslaving all the American Indians they could find and keep. However, for a series of political, cultural, and religious reasons, the governments of both Spain and Portugal eventually decided against permanently enslaving the American Indians. Both governments had just banned enserfment and other forms of semifree labor arrangements within Europe and were committed to the principle of free wage labor, at least in terms of their own metropolitan populations. For the Spaniards, it would also prove more profitable to exploit the major imperial systems created by the advanced Amerindian empires through their hierarchies of nobles governing major peasant populations than to enslave all workers through force. Although African slaves would be brought to the Spanish American possessions in the centuries after the conquest, they never formed the labor base of these societies and rather resembled in their use of domestic and of urban slavery the patterns then prevalent in Europe.
The situation of the Portuguese, however, was entirely different. Their American possessions initially held no silver or precious metals to be exploited or any other easily extracted resource that could pay for the high costs of full-scale colonization of these vast lands. They would thus be forced to produce agricultural products for the European market and would need large stocks of labor to produce these goods. In contrast to the Amerindians of the central valley of Mexico or the highlands of Peru, the coastal Indians of Brazil were less easy to exploit through indirect rule. The Brazilian Indians were not accustomed to major agricultural activity or taxation. Although the various Tupi-Guarani Indians were willing to cut Brazil wood in exchange for European products, they were unwilling to change their semi-nomadic ways or abandon their simple village organizations for such imported goods. Although the Portuguese initially had a large pool of Indians to exploit and wholeheartedly enslaved them, this Indian slave labor would eventually prove too unreliable and costly to guarantee the necessary agricultural labor force needed to maintain the economic viability of their American colony. High levels of disease, constant conflict on the frontier with noncaptive Indians, and an ever declining pool of Indians to capture, all made this an ever more expensive and unreliable source of workers. Finally, the unification of Portugal with Spain after 1580 made the metropolitan government less sympathetic to Indian slave labor than the independent Portuguese state had been, and the Spanish Crown consistently pushed the Portuguese planters to abandon this labor source.
Thus, for a multiplicity of economic, political, and even religious reasons, the Iberians eventually abandoned the possibility of Indian slavery. But what was to prevent them from exploiting their own peasantry and urban poor? Given the demands of both the metropolitan and imperial labor markets, wages for Portuguese workers in Europe were too high to make mass migration to America a cost-effective operation. With just over one million in population,19 Portugal was straining its resources to staff the vast African and Asian trading empire it was establishing from the early 1400s to the beginning of the sixteenth century. Demand for labor was so high that there was no pool of cheap Iberian labor that could be tapped for the initially quite poor lands of Brazil. With dyewoods – a product easily worked by free Indian labor – as the only important export from its American possession, compared with the gold, slaves, ivory, and spices from Africa and Asia, Portuguese America was a very uninteresting proposition for European laborers.
Given these constraints, and the history of sugar and slave production in their eastern Atlantic islands, it was inevitable that the Portuguese settlers in Brazil would use American Indians and then African slaves to create the first modern slave plantation system in the Americas. Brazil soon became the dominant sugar producer in the Western world, and its organization of African slave labor became the model that all other Europeans would follow in subsequent centuries.
1 The best model for distinguishing slaves from forced or dependent laborers is provided by Orlando Patterson, Slavery and Social Death: A Comparative Study (Cambridge: Harvard University Press, 1982). A discussion of these same issues for the classical period is found in M. I. Finley, “Between Slavery and Freedom,” Comparative Studies in Society and History, 6, no. 3 (April 1964).
2 For the most recent survey of slavery in the classical world with the latest bibliography, see Jean Andreau and Raymond Descat, Esclave en Grèce et à Rome (Paris: Hachette, 2006). On slavery in the classical Greek period, see Yvon Garlan, Slavery in Ancient Greece (rev. ed.; Ithaca, NY: Cornell University Press, 1982). On Roman slavery, see Keith Bradley, Slavery and Society at Rome (Cambridge: Cambridge University Press, 1994); Keith Hopkins, Conquerors and Slaves (Cambridge: Cambridge University Press, 1978); and the excellent recent study of Walter Scheidel, “Quantifying the Sources of Slaves in the Early Roman Empire,” The Journal of Roman Studies, vol. 87 (1997) as well as the older collection of essays edited by M. I. Finley, Classical Slavery (London: F. Cass, 1987).
3 On slavery in Europe in the post-Roman times, the classic work based on primary sources is Charles Verlinden, L’esclavage dans l’Europe médiévale (2 vols.; Brugge: De Tempel, 1955–1977), and the survey of William D. Phillips, Slavery from Roman Times to the Early Transatlantic Trade (Minneapolis: University of Minnesota Press, 1985). The basic relations between serfdom and slavery are examined in Marc Bloch, Slavery and Serfdom in the Middle Ages, Selected Essays (Berkeley: University of California Press, 1975) and discussed in Pierre Dockès, Medieval Slavery and Liberation (London: Methuen, 1982). Recent discussions on medieval slavery and its decline are found in Pierre Bonnaissie, From Slavery to Feudalism in South-Western Europe (Cambridge: Cambridge University Press, 1991) and Susan M. Stuard, “Ancillary Evidence for the Decline of Medieval Slavery,” Past & Present 149 (November 1995).
4 Slavery in Africa has been the subject of wide interest and controversy in recent years. A good introduction to this debate can be found in Walter Rodney, How Europe Underdeveloped Africa (London: Bogle-L'Ouverture Publications, 1972). The most recent and the best attempt at classification and historical analysis is Paul E. Lovejoy, Transformations in Slavery: A History of Slavery in Africa (Cambridge: Cambridge University Press, 1983). For detailed case studies, see the essays in Jean Claude Meillassoux, L’Esclavage en Afrique précoloniale (Paris: Presses Universitaires de France, 1975); Suzanne Miers and Igor Kopytoff, eds., Slavery in Africa: Historical and Anthropological Perspectives (Madison: University of Wisconsin Press, 1977); James Watson, ed., Asian and African Systems of Slavery (Berkeley: University of California Press, 1980); and finally Claire C. Robertson and Martin A. Klein, eds., Women and Slavery in Africa (Madison: University of Wisconsin Press, 1983).
5 On the North African and East African trades, see Patrick Manning, Slavery and African Life: Occidental, Oriental, and African Slave Trades (Cambridge: Cambridge University Press, 1990); François Renault and Serge Daget, Les traites négriéres en Afrique (Paris: Karthala, 1985); and the essays of Ralph A. Austen, “The Trans-Saharan Slave Trade: A Tentative Census,” in Henry A. Gemery and Jan S. Hogendorn, eds., The Uncommon Market: Essays in the Economic History of the Atlantic Slave Trade (New York: Academic Press, 1979); “The 19th Century Islamic Slave Trade from East Africa (Swahili and Red Sea Coasts): A Tentative Census,” Slavery & Abolition, IX (1988), and “The Mediterranean Islamic Slave Trade Out of Africa: A Tentative Census,” Slavery & Abolition, XIII (1992).
6 The standard analysis of Portuguese world trade in the first three centuries of exploration is Vitorino Magalhães Godinho, Os descobrimentos e a economia mundial (2nd ed. rev.; 4 vols.; Lisbon: Editorial Presença, 1981–1983). The best single interpretation of the early Portuguese slave trade is found in Ivana Elbl, “Volume of the Early Atlantic Slave Trade, 1450–1521,” Journal of African History, XXXVIII (1997). Elbl (p. 75) estimates that “Europeans exported approximately 156,000 slaves from Atlantic Africa between 1450 and 1521.” In turn, Godinho estimated a total of 140,000 to 150,000 slaves were taken from Africa by 1505. Godinho, Os descobrimentos, IV, p. 161. These figures are higher than the current estimate for Europe found in the new Atlantic slave trade database. Also see Luis Felipe de Alencastro, O trato dos viventes: Formação do Brasil no Atlântico Sul, séculos XVI e XVII (São Paulo: Companhia das Letras, 2000).
7 The history of sugar production in Mediterranean Europe is discussed in J. H. Galloway, The Sugar Cane Industry: An Historical Geography from Its Origins to 1914 (Cambridge: Cambridge University Press, 1989), chapter 3; and Noel Deerr, The History of Sugar (2 vols.; London: Chapman and Hall, 1949–1950).
8 This and all subsequent estimated numbers on the Atlantic slave trade come from the latest version of the project on the trade that is under the direction of David Eltis. This project began with David Eltis, Stephen D. Behrendt, David Richardson, and Herbert S. Klein, The Transatlantic Slave Trade: 1562–1867: A Database (New York, Cambridge: Cambridge University Press, 2000); was revised by David Eltis, “The Volume and Structure of the Transatlantic Slave Trade: A Reassessment,” The William & Mary Quarterly, 3rd series, 58, no. 1 (January 2001), which supplements the original estimates given by Philip Curtin in The Atlantic Slave Trade: A Census (Madison: University of Wisconsin Press, 1969) with the new Cambridge data set, plus further additions. For the most recent revisions and additions to the old Cambridge slave voyage data set of 2000, see The Trans-Atlantic Slave Trade Database, Voyages (Emory University) available at http://www.slavevoyages.org/tast/index.faces. The “estimates” are under a separate heading and are the numbers used throughout this volume. These can be found at http://www.slavevoyages.org/tast/assessment/estimates.faces. I have accessed the material as of August 2008 when this website was finally open to the public.
9 David Eltis, “The Relative Importance of Slaves and Commodities in the Atlantic Trade of Seventeenth-Century Africa,” The Journal of African History, 35, no. 2 (1994).
10 Vicenta Cortes Alonso, La esclavitud en Valencia durante el reinado de los reyes católicos (1479–1516) (Valencia: Ayuntamiento, 1964), pp. 57–60; and Alfonso Franco Silva, La esclavitud en Sevilla y su tierra a fines de la edad media (Sevilla: Diputación Provincial de Sevilla, 1979). For the latest survey of the different groups enslaved in the Iberian Peninsular, see Alessandro Stella, Historie d’esclaves dans la peninsula Ibérique (Paris: École des Hautes Études en Sciences Sociales, 2000).
11 Frédéric Mauro, Le Portugal et l’Atlantique au XVIIe siècle, 1570–1670; étude économique (Paris: SEVPEN, 1960), p. 147; Verlinden, L’esclavage dans l’Europe médiévale I, p. 837.
12 A. C. de C. M. Saunders, A Social History of Black Slaves and Freedmen in Portugal, 1441–1555 (Cambridge: Cambridge University Press, 1982) provides the most complete study of Africans in Portugal, with chapter 3 covering their demography and chapter 4 their occupations. The Lisbon population estimates are given in ibid., pp. 54–5. Also see the recent survey by Stella, Historie d’esclaves dans la peninsula Ibérique.
13 The Portuguese Atlantic experience is analyzed in John L. Vogt, Portuguese Rule on the Gold Coast, 1469–1682 (Athens: University of Georgia Press, 1979). The background chapters in Stuart B. Schwartz, Sugar Plantations in the Formation of Brazilian Society (Bahia, 1550–1835) (Cambridge: Cambridge University Press, 1985) provide a good general survey of the Madeira and Azorian experience; and a detailed study of the Madeira sugar industry is found in Alberto Vieira, “Sugar Islands: The Sugar Economy of Madeira and the Canaries, 1450–1650,” in Stuart B. Schwartz, ed., Tropical Babylons: Sugar and the Making of the Atlantic World, 1450–1680 (Chapel Hill: University of North Carolina Press, 2004). The standard studies of slavery on these islands are found in Alberto Vieira, Os escravos no arquipélago da Madeira: séculos XV a XVII (Funchal: Centro de Estudos de História do Atlántico, 1991); and Manuel Lobo Cabrera, La esclavitud en las Canarias orientales en el siglo XVI (negros, moros y moriscos) (Las Palmas: Cabildo Insular de Gran Canaria, 1982).
14 Genaro Rodríguez Morel, “The Sugar Economy of Española in the Sixteenth Century,” in Schwartz, ed., Tropical Babylons.
15 On the Morisco and Central American Indian slaves found in sixteenth-century Peru, see James Lockhart, Spanish Peru, 1532–1560: A Social History (2nd ed.; Madison: University of Wisconsin Press, 1994), pp. 222–4, 228–31.
16 On whether slavery or some other form of forced labor might result from a cheap land and costly labor situation, see Evsey D. Domar, “The Causes of Slavery or Serfdom: A Hypothesis,” Journal of Economic History, 30, no.1 (March 1970).
17 For determining the population movements of Indians, Africans, and Europeans in America in this first century, the best overall assessment will be found in Nicolás Sánchez-Albornoz, La población de America Latina: Desde los tiempos precolombianos al año 2025 (2nd rev. ed.; Madrid: Alianza Editorial, 1994); and his more recent “The Population of Colonial Spanish America,” in Leslie Bethell, ed., Cambridge History of Latin America, vol. II (Cambridge: Cambridge University Press, 1984). Reliable numbers on the Indian population of Mexico are found in William T. Saunders, “The Population of the Central Mexican Symbiotic Region, the Basin of Mexico, and the Teotihuacán Valley in the Sixteenth Century,” in William M. Denevan, ed., The Native Population of the Americas in 1492 (Madison: The University of Wisconsin Press, 1976); and for Peru, in David Nobel Cook, Demographic Collapse, Indian Peru 1520–1620 (Cambridge: Cambridge University Press, 1981). For the Portuguese American territories in the same period, see Maria Luiza Marcílio, “The Population of Colonial Brazil,” The Cambridge History of Latin America (11 vols.; Cambridge: Cambridge University Press, 1984), II.
18 David Eltis, “Slavery and Freedom in the Early Modern World,” in Stanley L. Engerman, ed., Terms of Labor, Slavery, Serfdom, and Free Labor (Stanford: Stanford University Press, 1999), pp. 28–9, table 1.
19 The first official census of Portugal in 1527–32 estimated a population of between 1 and 1.5 million persons. João José Alves Dias, “A População,” in Joel Serrão and A. H. de Oliveira Marques, eds., Nova Historia de Portugal (12 vols.; Lisbon: Editorial Presença, 1998), V, p. 13.