The most familiar form of communism is that established by the Bolsheviks after the Russian Revolution of 1917, and it has generally been understood in terms of the system practised by the former Soviet Union and its allies in eastern Europe, in China since 1949, and in some developing countries such as Cuba, Vietnam, and North Korea. In this form of communism it was held that the state would wither away after the overthrow of the capitalist system. In practice, however, the state grew to control all aspects of communist society. Communism in eastern Europe collapsed in the late 1980s and early 1990s against a background of failure to meet people’s economic expectations, a shift to more democracy in political life, and increasing nationalism such as that which led to the break-up of the Soviet Union.