Marxism became one of the major forces on twentieth century world history. Cooperation among peasants diminished during the twentieth century. Some date to the early decades of the twentieth century. This disappeared in the forties of the twentieth century. Erving Goffman was one of the most influential sociologists of the twentieth century. Gershwin was influenced by French composers of the early twentieth century. He is regarded as being among the foremost fashion designers in the twentieth century. He has been described as one of the greatest pianists of the twentieth century. Her work is considered among some of the greatest in twentieth century Russian literature. Woolf is considered to be one of the most important twentieth century novelists. Boulez was one of the leading conductors of the second half of the twentieth century. Feminism had complex interactions with the major political movements of the twentieth century. Nationalization took off following the World Wars of the first half of the twentieth century. I stood at the beginning of the twentieth century. They pioneered production techniques and stylistic devices used throughout the twentieth century.