WHAT ALL HAPPENED MARCH TO OCTOBER 1921
Find out what all happened March to October 1921

Tulsa race riot: civil unrest in Tulsa, Oklahoma. The official death toll is 39, but recent investigations suggest the actual toll may be much higher. (31. May 1921)

Portuguese Communist Party is founded as the Portuguese Section of the Communist International. (6. March 1921)

The Chicago Theatre opens. (26. October 1921)

Serbian King Alexander I proclaimed the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution. (28. June 1921)

Tulsa Race Riot: civil unrest in Tulsa, Oklahoma. (1. June 1921)

The U.S. Congress passes the Emergency Quota Act establishing national quotas on immigration. (19. May 1921)

Black Friday: mine owners announce more wage and price cuts, leading to the threat of a strike all across England. (15. April 1921)

The New Economic Policy is implemented by the Bolshevik Party in response to the economic failure as a result of War Communism. (21. March 1921)

The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic. (11. July 1921)

Portuguese Prime Minister António Granjo and other politicians are murdered in a Lisbon coup. (19. October 1921)

President Warren G. Harding delivers the first speech by a sitting U.S. President against lynching in the deep south. (21. October 1921)

The Australian cricket team captained by Warwick Armstrong becomes the first team to complete a whitewash of The Ashes, something that would not be repeated for 86 years. (1. March 1921)

Former President of the United States William Howard Taft is sworn in as 10th Chief Justice of the U.S. Supreme Court, becoming the only person ever to hold both offices. (11. July 1921)

The trial of Sacco and Vanzetti opens. (24. May 1921)

Spanish Premier Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid. (8. March 1921)

The Soviet republics of Russia, Armenia, Azerbaijan, and Georgia sign the Treaty of Kars with the Grand National Assembly of Turkey to establish the contemporary borders between Turkey and the South Caucasus states. (13. October 1921)

Baseball: The World Series is broadcast on the radio for the first time. (5. October 1921)

A storage silo in Oppau, Germany, explodes, killing 500-600 people. (21. September 1921)

Second trial of Sacco and Vanzetti in the United States of America. (29. October 1921)

Belfast's Bloody Sunday: 16 people are killed and 161 houses destroyed during rioting and gun battles in Belfast, Northern Ireland. (10. July 1921)