The second half of the Cold War saw both Eastern and Western Europe sink into a state of economic stagnation, but societal and political values changed in response to decades of war, uncertainty, and struggle. Young people of the west expressed their discontent with the state of the world through various social movements, in particular during the turbulent year that was 1968. Attitudes about sex, gender, race, imperialism, education, war, and politics barely resembled the attitudes of the early 20th century. Perhaps for this reason, the 20th century was nicknamed "The Short Century", since historians believe it really started in 1914. During the 1960's through the 1980's, Western and Eastern Europe developed different political, social, and economic identities, as Eastern Europe was subjected to continued repression from the Soviet Union. The United States entered the world stage in a new light as it entered the Second Vietnam War- a conflict that was very unpopular both at home and abroad, and seen as an extension of imperialist policies. At the same time, science and technology merged to revolutionize life itself and create a new frontier: the space race and advent of the computer, as well as new ideas about gender inequality, the meaning of life, and humanity itself were questioned and expressed as abstract concepts through art and entertainment.