Events January January 1 Polish–Soviet War in 1920: The Russian Red Army increases its troops along the Polish border from 4 divisions to 20. Kauniainen, completely surrounded by the city of Espoo, secedes from Espoo as its own market town. January 3 – The 1920 Xalapa earthquake in Mexico kills over 600 people, making it the second deadliest in the country. January 7 – Russian Civil War: The forces of Russian White Admiral Alexander Kolchak surrender in Krasnoyarsk; the Great Siberian Ice March ensues. January 10 The Treaty of Versailles takes effect, officially ending World War I. The League of Nations Covenant enters into force. On January 16, the organization holds its first council meeting, in Paris. January 11 – The Azerbaijan Democratic Republic is recognised de facto by European powers in Versailles. January 13 – The New York Times ridicules American rocket scientist Robert H. Goddard, which it will rescind following the launch of Apollo 11 in 1969. January 16 The Allies of World War I demand that the Netherlands extradite ex-German Emperor Wilhelm II who fled there in 1918. Zeta Phi Beta Sorority, Incorporated, is founded on the campus of Howard University in Washington, D.C. January 17 – Prohibition in the United States begins, with the Eighteenth Amendment to the Constitution coming into effect. January 19 – The American Civil Liberties Union (ACLU) is founded. January 21 – The final session of the Paris Peace Conference is held, even though peace treaties with Hungary and Turkey remain to be concluded. The United States does not conclude its own treaty with Germany until August 25, 1921. January 22 – The Australian Country Party is officially formed. January 23 – The Netherlands refuses to extradite ex-Emperor Wilhelm II; on May 15 he moves into Huis Doorn in the country where he remains permanently in exile. January 28 – El Tercio de Extranjeros (the "Regiment of Foreigners"), later the Spanish Legion, is established by decree of King Alfonso XIII of Spain. February February 1 – The South African Air Force (SAAF) is established, the second autonomous Air Force in the world, after the Royal Air Force (RAF). February 2 Estonian War of Independence: The Tartu Peace Treaty is signed, ending the war and recognizing the independence of both the Republic of Estonia and the Russian Socialist Federative Soviet Republic. France occupies Memel. Sayyid Muhammad, Khan of Khiva, abdicates. February 9 –