It was an adapation of a story first presented in Charles Bruce Millholland's play Napoleon of Broadway, based on his experiences working for the theater producer David Belasco. This was adapted by Ben Hecht and Charles MacArthur as the play Twentieth Century, which was produced and directed on Broadway in 1932 by George Abbott.
The plot, a screwball comedy, features an egomaniacal Broadway producer who makes a shopgirl into a star, then tries to win her back after she abandons him. Most of the action takes place aboard the New York City-Chicago train known as The Twentieth Century Limited.
The term is also used to describe various periods that overlap with the calendar definition, most notably the Short twentiethcentury and the Modern period.
The twentiethcentury saw a remarkable shift in the way that vast numbers of people lived, as a result of technological, medical, social, ideological, and political innovations.
The 20th century has sometimes been called, both within and outside the United States, the American Century, though this is a controversial term.
Average farm household income was substantially lower than the nonfarm average during almost the whole of the century, but between the end of World War II and the mid-1960s had risen to about 70 percent of the nonfarm level, and continued to rise thereafter until achieving parity or slightly more in the 1990s.
From the Progressive Era of the early twentiethcentury, federal and state regulation has attempted to increase the market power of farmers, reduce that of processors and suppliers of farm inputs, protect food quality and safety, and provide public services such as market information and improved soil conservation and environmental quality.
Throughout the twentiethcentury the sector remained a reasonably close approximation of the competitive supply-and-demand model.