British novelist Martin Amis observes that recurring patterns of imperial ascendance-and-decline are mirrored in the novels published; according to Amis, novels follow current political trends. In the Victorian era, when Britain was the ascendant power, British novels were large and tried to express what society as a whole was. British power waned during the Second World War and ended after the war. The British novel was then some 225 pages long and centered on narrower subjects such as career setbacks or marriage setbacks: the British novel's "great tradition" increasingly looked depleted. Ascendance, according to Amis, had passed to the United States, and Americans such as Saul Bellow, Norman Mailer, Philip Roth, and John Updike began writing huge novels.