what does ussr stand for?
It stands for the Union of Socialist Soviet Republics, a coalition made by Russia from 1917 up to 1991
USSR stands for The Union of Soviet Socialist Republics (Сою́з Сове́тских Социалисти́ческих Респу́блик - CCCP). It was a communist state located in Europe and Asia which took place of the Tsar Russia and lasted from 1922 until 1991, when the union was overthrown. The country was formed by the socialist revolutionists led by Vladimir Lenin and expanded under the rule of Joseph Stalin (the chaotic and deadly era of Stalinism). The capital was Moscow and the government is described as Marxist–Leninist single-party state. The symbol of USSR, simillar to most socialist states, was hammer and sickle on the red background. The Russian Revolution of 1917 was one of the main events that led to the creation of the USSR. The stated was based on the Marxist-Leninism philosophy and some of its key characteristics were: central-planned economy, industrialization, collectivism, state owned businesses, highly limited private property and massive fear and political paranoia which was caused by the tyranny of Stalinism. The 'enemies' of the state were sent to Gulags - correctional labour camps, where they very often died due to unbearable conditions and extremely hard work. The USSR played a key role in World War II.