<P> In 1902 , the United States government protested that Russian encroachment in Manchuria after the Boxer Rebellion was a violation of the Open Door Policy . When Japan replaced Russia in southern Manchuria after the Russo - Japanese War ( 1904 -- 05 ) the Japanese and U.S. governments pledged to maintain a policy of equality in Manchuria . In finance , American efforts to preserve the Open Door Policy led ( 1909 ) to the formation of an international banking consortium through which all Chinese railroad loans would agree ( 1917 ) to another exchange of notes between the United States and Japan in which there were renewed assurances that the Open Door Policy would be respected , but that the United States would recognize Japan 's special interests in China ( the Lansing -- Ishii Agreement ) . The Open Door Policy had been further weakened by a series of secret treaties ( 1917 ) between Japan and the Allied Triple Entente , which promised Japan the German possessions in China on successful conclusion of World War I . The subsequent realization of such promise in the Versailles Treaty of 1919 angered the Chinese public and sparked the protest known as May Fourth Movement . The Nine - Power Treaty , signed in 1922 , expressly reaffirmed the Open Door Policy . </P>
<P> In 1902 , the United States government protested that Russian encroachment in Manchuria after the Boxer Rebellion was a violation of the Open Door Policy . When Japan replaced Russia in southern Manchuria after the Russo - Japanese War ( 1904 -- 05 ) the Japanese and U.S. governments pledged to maintain a policy of equality in Manchuria . In finance , American efforts to preserve the Open Door Policy led ( 1909 ) to the formation of an international banking consortium through which all Chinese railroad loans would agree ( 1917 ) to another exchange of notes between the United States and Japan in which there were renewed assurances that the Open Door Policy would be respected , but that the United States would recognize Japan 's special interests in China ( the Lansing -- Ishii Agreement ) . The Open Door Policy had been further weakened by a series of secret treaties ( 1917 ) between Japan and the Allied Triple Entente , which promised Japan the German possessions in China on successful conclusion of World War I . The subsequent realization of such promise in the Versailles Treaty of 1919 angered the Chinese public and sparked the protest known as May Fourth Movement . The Nine - Power Treaty , signed in 1922 , expressly reaffirmed the Open Door Policy . </P>
when did the us end its open door policy
when did the us end its open door policy
1922
1922