A History of the English-Speaking Peoples out and then when Churchill was appointed Prime Minister. After the war ended in 1945, Churchill was busy, first writing his history of that conflict and then as Prime Minister again between 1951 and 1955, and so it was not until the late 1950s, when Churchill was in his early eighties, that he was able to finish the work. The later volumes were completed when Churchill was over eighty. A full one-third of the last volume was devoted to the military minutiae of the American Civil War. Social history, the agricultural revolution, and the industrial revolution hardly get a mention.
Prime Minister of the United Kingdom because of the diminishing role of the Cabinet Ministers and because of centralisation of the party machine and the bureaucracy. Richard Crossman also alluded to the presidentialisation of British politics in the "Introduction" to the 1963 version of Walter Bagehot’s "The English Constitution". Crossman mentions the World War II, and its immediate aftermath as a water-shed moment for Britain that led to immense accumulation of power in the hands of the British Prime Minister These powers, according to Crossman, are so immense that their study require the use of presidential parallels. The thesis has been most popularised by Michael Foley,