General Secretary of the Communist Party of the Soviet Union more than determine party membership composition. Stalin, its first incumbent, used the principles of democratic centralism to transform his office into that of party leader, and later leader of the Soviet Union. In 1934, the 17th Party Congress refrained from formally re-electing Stalin as General Secretary. However, Stalin was re-elected into all other positions and remained leader of the party without diminishment. In the 1950s, Stalin increasingly withdrew from Secretariat business, leaving the supervision of the body to Georgy Malenkov, possibly to test him as a potential successor. In October 1952, at the 19th Party Congress, Stalin restructured the party's
Joseph Stalin and investment in heavy industry. It was aimed for economic autarky within the Eastern Bloc. In October 1949, Mao took power in China. With this accomplished, Marxist governments now controlled a third of the world's land mass. Privately, Stalin revealed that he had underestimated the Chinese Communists and their ability to win the civil war, instead encouraging them to make another peace with the KMT. In December 1949, Mao visited Stalin. Initially Stalin refused to repeal the Sino-Soviet Treaty of 1945, which significantly benefited the Soviet Union over China, although in January 1950 he relented and agreed to sign a