WHAT ALL HAPPENED APRIL TO JUNE 1921
Find out what all happened April to June 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)

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

Workers of Buckingham and Carnatic Mills in the city of Chennai, India, begin a four-month strike. (20. 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)

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

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

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

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

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