WHAT ALL HAPPENED APRIL TO OCTOBER 1920
Find out what all happened April to October 1920

The first commercial radio station, 8MK (now WWJ), begins operations in Detroit, Michigan. (20. August 1920)

Polish-Bolshevik War: a decisive Polish victory in the Battle of Komarów. (31. August 1920)

The Wall Street bombing: a bomb in a horse wagon explodes in front of the J. P. Morgan building in New York City – 38 are killed and 400 injured. (16. September 1920)

The national council in Turkey denounces the government of Sultan Mehmed VI and announces a temporary constitution. (23. April 1920)

The 19th amendment to United States Constitution takes effect, giving women the right to vote. (26. August 1920)

Polish–Soviet War: the Battle of Warsaw begins and will last till August 25. The Red Army is defeated. (13. August 1920)

Battle of Warsaw so called Miracle at the Vistula. (15. August 1920)

Polish–Soviet War: Battle of Warsaw, which began on August 13, ends with the Red Army's defeat. (25. August 1920)

Two newly purchased Savoia flying boats crash in the Swiss Alps en route to Finland where they would serve with the Suomen Ilmavoimat, killing both crews. (7. September 1920)

The Latvian–Soviet Peace Treaty, which relinquished Russia's authority and pretenses to Latvia, is signed, ending the Latvian War of Independence. (11. August 1920)

In Rome, Pope Benedict XV canonizes Joan of Arc. (16. May 1920)

The first game of the Negro National League baseball is played in Indianapolis. (2. May 1920)

Authorities arrest Nicola Sacco and Bartolomeo Vanzetti for alleged robbery and murder. (5. May 1920)

A new border treaty between Germany and Denmark gives northern Schleswig to Denmark. (15. June 1920)

The Nineteenth Amendment to the United States Constitution is ratified, guaranteeing women's suffrage. (18. August 1920)

Part of Petsamo Province is ceded by the Soviet Union to Finland. (14. October 1920)

The Carinthian Plebiscite determines that the larger part of Carinthia should remain part of Austria. (10. October 1920)

Treaty of Moscow: Soviet Russia recognizes the independence of the Democratic Republic of Georgia only to invade the country six months later. (7. May 1920)

The Fountain of Time opens as a tribute to the 100 years of peace between the United States and Great Britain following the Treaty of Ghent. (1. September 1920)

The Polish Parliament establishes Silesian Voivodeship before the Polish-German plebiscite. (15. July 1920)