Title: Russkai︠a︡ troit︠s︡a XX-go veka
Subjects: Politics and government, Communism, Revolutionaries, History, Biography, Statesmen
Places: Soviet Union
People: Leon Trotsky (1879-1940), Vladimir Ilʹich Lenin (1870-1924), Joseph Stalin (1878-1953)
Time periods: 1936-1953, 1917-1936