Before the opening of the Second World Congress of the Communist International (July 19–August 7, 1920) [which met on the first day in Petrograd but subsequently in Moscow], Lenin prepared a draft thesis on the national and colonial question. M. N. Roy, a young Bengali attending his first international Communist gathering, eagerly responded to Lenin's request for criticisms. As a result, Lenin invited him to write an alternative thesis. Both theses were modified as a result of discussions within the National and Colonial Commission, and both were subsequently adopted by the Congress. After his encounter with Lenin, Roy rose rapidly in the Comintern hierarchy. In 1922 he was elected a candidate member of the Executive Committee of the Communist International (ECCI), and a full voting member in 1924. He became a member of the Presidium in 1924. It was in the year 1926, however, that Roy attained the peak of his influence in the Comintern. In February of that year he was appointed to the editorial staff of theCommunist International, and in the following December he was reelected to the Presidium and joined the Political Secretariat of the ECCI. At the time of the Seventh Plenum of the ECCI (November 12–December 16, 1926), Roy became Secretary of the Chinese Commission, a post he held jointly with Petrov, and a member of the Agrarian Commission. The Plenum, convened for the purpose of considering the China problem, adopted a thesis on the question and Roy was sent to China as a representative of the Comintern to carry it out. Following the events in China in 1927, Roy's influence declined precipitately, though he was not formally expelled until December, 1929.