Paris Peace Conference: Woodrow Wilson overturns Japan's Racial Equality Proposal, stating that unanimous support was required.

The Paris Peace Conference was a set of formal and informal diplomatic meetings in 1919 and 1920 after the end of World War I, in which the victorious Allies set the peace terms for the defeated Central Powers. Dominated by the leaders of Britain, France, the United States and Italy, the conference resulted in five treaties that rearranged the maps of Europe and parts of Asia, Africa and the Pacific Islands, and also imposed financial penalties. Germany, Austria-Hungary, Turkey and the other losing nations were not given a voice in the deliberations; this later gave rise to political resentments that lasted decades. The arrangements made by this conference are considered one of the greatest watersheds of 20th century geopolitical history which would lead to World War II.

Thomas Woodrow Wilson was the 28th president of the United States, serving from 1913 to 1921. He was the only Democrat to serve as president during the Progressive Era when Republicans dominated the presidency and legislative branches. As president, Wilson changed the nation's economic policies and led the United States into World War I. He was the leading architect of the League of Nations, and his stance on foreign policy came to be known as Wilsonianism.

The Racial Equality Proposal (Japanese: 人種的差別撤廃提案; lit. "Proposal to abolish racial discrimination") was an amendment to the Treaty of Versailles that was considered at the 1919 Paris Peace Conference.