WHAT ALL HAPPENED FEBRUARY TO JUNE 1921
Find out what all happened February to June 1921

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

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)

Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution. (21. February 1921)

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

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

Southwark Bridge in London is opened for traffic by King George V and Queen Mary. (6. June 1921)

The Second Republic of Poland adopts the March Constitution. (17. March 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)

The Young Communist League of Czechoslovakia is founded. (20. February 1921)

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

The Autonomous Government of Khorasan, a military government encompassing the modern state of Iran, is established. (2. April 1921)

Rezā Shāh takes control of Tehran during a successful coup (21. 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)

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)

U.S. President Warren G. Harding appoints former President William Howard Taft Chief Justice of the United States. (30. June 1921)

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

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

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