Two years later, the U.S. government protested that Russian encroachment in Manchuria was a violation of the Open Door. When Japanese replaced Russian influence in S Manchuria after the Russo-Japanese War (1904–5) the Japanese and U.S. governments pledged to maintain a policy of equality in Manchuria. In finance, American efforts to preserve the Open Door led (1909) to the formation of an international banking consortium through which all Chinese railroad loans would be made. The United States withdrew in 1913, asserting that the consortium violated Chinese administrative integrity.
The next violation of the Open Door policy occurred in 1915, when Japan presented to China the Twenty-one Demands. That incident led (1917) to another exchange of notes between the United States and Japan in which there were renewed assurances that the Open Door would be respected, but that the United States recognized Japan's special interests in China. The Open Door principle had been further weakened by a series of secret treaties (1917) between Japan and the Allies, which promised Japan the German possessions in China.
The increasing disregard of the Open Door was a main reason for the convocation of the Conference on the Limitation of Armament (1921–22) in Washington, D.C. As a result of the conference, the Nine-Power Treaty, guaranteeing the integrity and independence of China and reaffirming the Open Door principle, was signed by the United States, Great Britain, Japan, France, Italy, the Netherlands, Portugal, China, and Belgium. With the Japanese seizure (1931) of Manchuria and the creation of Manchukuo, however, the Open Door received its greatest reverse.
After World War II, China's position as a sovereign state was recognized. No nation, therefore, had the right or capacity to carve out spheres of influence or to attempt to exclude other states from trade, and the Open Door policy ceased to exist.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.