The world was changing at a blistering speed in Bagehot's day. New scientific ideas were reshaping the world, and every field of human inquiry was affected by this new interest in giving a full explanation for the history of everything in existence. In this work, first published in 1872, Bagehot applies scientific ideas, like survival of the fittest, to the development of nations and government. He further discusses the effect of scientific and technological advancements, like the invention of stronger and more deadly weapons, on politics. British journalist WALTER BAGEHOT (1826-1877) was an early editor of The Economist and was among the first economists to discuss the concept of the business cycle. He is also the author of The English Constitution (1873) and The Postulates of English Political Economy (1885).