"Despite American support, the Nationalists were defeated anew after World War Two: by the Communists in the Chinese Civil War. This defeat would have been less likely, bar for the war. Prior to the Japanese attack on China, the Communists had been in a vulnerable position in their conflict with the Nationalists. As a result of repeated and increasingly successful Nationalist attacks from 1930, the Communists, in 1934, had abandoned their base in Jiangxi and, in the Long March, had moved in 1935 to a more remote rural power base in northern Shanxi. Funded and provided with arms by Stalin, Mao had become a factor in the complicated negotiations of power in China. Following the Japanese attack, the Communists benefited from having become, during the late 1930s and early 1940s, the dominant anti-Japanese force in northern China and from the war having weakened the Nationalists."