WHAT ALL HAPPENED JANUARY TO MAY 1921
Find out what all happened January to May 1921

Kingdom of Romania establishes its legation in Helsinki. (15. February 1921)

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

The first Constitution of Turkey is adopted, making fundamental changes in the source and exercise of sovereignty by consecrating the principle of national sovereignty. (20. January 1921)

Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them. (19. March 1921)

The second Peace of Riga between Poland and Soviet Union. (18. March 1921)

Tbilisi, capital of the Democratic Republic of Georgia, is occupied by Bolshevist Russia. (25. February 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 trial of Sacco and Vanzetti opens. (24. May 1921)

Mongolia is proclaimed an independent monarchy, ruled by Russian military officer Roman von Ungern-Sternberg as a dictator. (13. March 1921)

Italian Fascists shoot from the Parenzana train at a group of children in Strunjan (Slovenia): two children are killed and five wounded. (19. March 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 Autonomous Government of Khorasan, a military government encompassing the modern state of Iran, is established. (2. April 1921)

Emir Abdullah establishes the first centralised government in the newly created British protectorate of Transjordan. (11. April 1921)

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

Acting to restore confidence in baseball after the Black Sox Scandal, Judge Kenesaw Mountain Landis is elected as Major League Baseball's first commissioner. (12. January 1921)

The Royal Australian Air Force is formed. (31. March 1921)

İstiklal Marşı was adopted in TBMM(Turkish grand national assembly). (12. March 1921)

After Russian forces under Baron Roman von Ungern-Sternberg drive the Chinese out, the Bogd Khan is reinstalled as the emperor of Mongolia. (22. February 1921)

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

The International Working Union of Socialist Parties is founded in Vienna. (27. February 1921)