WHAT ALL HAPPENED MARCH TO DECEMBER 1920
Find out what all happened March to December 1920

The first commercial radio station, 8MK (now WWJ), begins operations in Detroit, Michigan. (20. 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 first game of the Negro National League baseball is played in Indianapolis. (2. 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)

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

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

Two security guards are murdered during a robbery in South Braintree, Massachusetts. Anarchists Sacco and Vanzetti would be convicted of and executed for the crime, amid much controversy. (15. April 1920)

American Fishing Schooner Esperanto defeats the Canadian Fishing Schooner Delawana in the First International Fishing Schooner Championship Races in Halifax. (1. November 1920)

Italy and the Kingdom of Serbs, Croats and Slovenes sign the Treaty of Rapallo. (12. November 1920)

The GOELRO economic development plan is adopted by the 8th Congress of Soviets of the Russian SFSR. (22. December 1920)

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

Kiev Offensive: Polish troops led by Józef Piłsudski and Edward Rydz-Śmigły and assisted by a symbolic Ukrainian force capture Kiev only to be driven out by the Red Army counter-offensive a month later. (7. May 1920)

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

After 74 days on Hunger Strike in Brixton Prison, England, the Sinn Féin Lord Mayor of Cork, Terence MacSwiney died. (25. October 1920)

Palm Sunday tornado outbreak of 1920 affects the Great Lakes region and Deep South states. (28. March 1920)

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

Patriarch Tikhon issues a decree that leads to the formation of the Russian Orthodox Church Outside Russia. (7. November 1920)