1st » The Royal Canadian Mounted Police begins operations.
2nd » The Treaty of Tartu (Russian–Estonian) named Tartu Peace Treaty is signed between Estonia and Russia.
2nd » France occupies Klaipėda called Memel.
9th » Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
13th » The Negro National League (1920–1931) known as Negro National League is formed.
14th » The League of Women Voters is founded in Chicago.