WHAT ALL HAPPENED MARCH TO SEPTEMBER 1920
Find out what all happened March to September 1920

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

The Grand National Assembly of Turkey (TBMM) is founded in Ankara. (23. April 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)

Foundation of the Spanish Legion. (20. September 1920)

Hungary loses 71% of its territory and 63% of its population when the Treaty of Trianon is signed in Paris. (4. June 1920)

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

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

France captures Damascus. (25. July 1920)

The United States Senate rejects the Treaty of Versailles for the second time (the first time was on November 19, 1919). (19. March 1920)

The Art Gallery of Ontario, in Toronto, opens the first exhibition by the Group of Seven. (7. May 1920)

Polish–Soviet War: The Battle of Radzymin concludes; the Soviet Red Army is forced to turn away from Warsaw. (16. August 1920)

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

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

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

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

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

In the East Prussian plebiscite the local populace decides to remain with Weimar Germany. (11. July 1920)

Montreal, Quebec radio station XWA broadcasts the first regularly scheduled radio programming in North America. (20. May 1920)