The “fall” of mainland China to communism in 1949 led the United States to suspend diplomatic ties with the PRC for decades. Communists entering Beijing in 1949.
China in the 1920s was a new republic confronting great challenges—economic, political, and social. ... Famine, warlord power, and a largely ineffective government were the backdrop for revolutionary activity in China to foment. By 1921, the Chinese Communist Party (CCP) was formally established.
~D) Most Americans favored the Allies. ... His 1914 assassination caused many people to call for the United States to enter the war, but President Wilson declared that the country would stay neutral.