wars Prefer lower case for the names of wars:
American civil war
cold war
Gulf war
war of the Spanish succession
war of Jenkin’s ear
But these are exceptions:
the Thirty Years War
the War of Independence
the Wars of the Roses
the Six-Day War
Write:
the first world war or the 1914–18 war, not world war one, I or 1 the second world war or the 1939–45 war, not world war two, II or 2
Post-war and pre-war are hyphenated.
the West, Western should be capitalised in a political context (as in the decline of the West). Use capitals also for Western, as in films, novels, etc.
which and that Which informs, that defines. This is the house that Jack built. But This house, which Jack built, is now falling down. Americans tend to be fussy about making a distinction between which and that. Good writers of British English are less fastidious. (“We have left undone those things which we ought to have done.”)
while is best used temporally. Do not use it in place of although or whereas.
who, whom Who is one of the few words in English that differ in the accusative (objective) case, when it becomes whom, often throwing native English-speakers into a fizzle.
In the sentence This is the man who can win the support of most Tory MPs, the word you want is who, since who is the subject of the relative clause. It remains the subject, and therefore also who, in the sentence This is the man who she believes (or says or insists, etc) can win the support of most Tory MPs. That becomes clearer if the sentence is punctuated thus: This is the man who, she believes (or says or insists, etc), can win the support of most Tory MPs.
However, in the sentence This is the man whom most Tory MPs can support, the word in question is whom because the subject of the relative clause has become most Tory MPs. Whom is also necessary in the sentence This is the man whom she believes to be able to win the support of most Tory MPs. This is because the verb believe is here being used as a transitive verb, when it must be followed by an infinitive. If, however, the word insists were used instead of believes, the sentence could not be similarly changed, because the verb insist cannot be used transitively.
wrack is an old word meaning vengeance, punishment or wreckage (as in wrack and ruin). It can also be seaweed. And as a verb it can mean to wreck, devastate or ruin. It has nothing to do with wreak, and it is not an instrument of torture or a receptacle for toast: that is rack. Hence racked with pain, by war, drought, etc. Rack your brains – unless they be wracked.