Major Events of September 1921: Key Historical Moments from the Month

Each month is marked by defining moments that shape the course of history. Whether through political shifts, cultural movements, or world-changing events, these periods leave a lasting impression. Dive into the most important events from September 1921 and discover how they influenced the world both then and now.

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Major Events of September 1921: Key Historical Moments from the Month


  • 01 Sep 1921 Launch of USS Washington superdreadnought: The USS Washington (BB-47), a canceled dreadnought battleship of the United States Navy, was launched on September 1, 1921. The ship was named in honor of the 42nd state and was sponsored by Miss Jean Summers, daughter of Congressman John W. Summers of Washington. source: en.wikipedia.org
  • 02 Sep 1921 International humanitarian aid to Russian famine: In September 1921, international humanitarian aid efforts were initiated to address the severe famine in Soviet Russia. These efforts aimed to provide essential food and medical supplies to the affected population. source: en.wikipedia.org
  • 03 Sep 1921 Battle of Blair Mountain: U.S. Army intervention: On September 3, 1921, federal troops were deployed to West Virginia to intervene in the Battle of Blair Mountain, a significant labor uprising. The intervention aimed to restore order and prevent further violence between miners and law enforcement. source: nps.gov
  • 04 Sep 1921 Battle of Blair Mountain: Landmark labor uprising: The Battle of Blair Mountain, occurring from August 25 to September 2, 1921, was a significant labor uprising in the United States. It involved thousands of miners confronting law enforcement and private security forces in an attempt to unionize the coalfields of West Virginia. source: history.com
  • 05 Sep 1921 Walter Johnson sets MLB strikeout record: On September 5, 1921, Walter Johnson, a renowned pitcher for the Washington Senators, set a Major League Baseball strikeout record. Johnson was known for his exceptional pitching skills and was a dominant force in the league during his career. source: en.wikipedia.org
  • 06 Sep 1921 New York World exposes Ku Klux Klan: On September 6, 1921, the New York World began publishing a 21-article exposé on the Ku Klux Klan, revealing its rituals, recruitment methods, and hypocrisies. This series led to national discourse on the Klan's activities. source: en.wikipedia.org
  • 11 Sep 1921 Fatty Arbuckle arrested for rape and manslaughter: On September 11, 1921, silent film actor Roscoe "Fatty" Arbuckle was arrested in San Francisco for the alleged rape and manslaughter of actress Virginia Rappe. Rappe had fallen ill at a party in Arbuckle's hotel suite and died four days later from peritonitis caused by a ruptured bladder. Arbuckle was later acquitted after three trials. source: crimemagazine.com
  • 15 Sep 1921 Jackie Cooper born in Los Angeles, California: Jackie Cooper, an American actor and television director known for his work in film and television, was born on September 15, 1921, in Los Angeles, California. source: en.wikipedia.org
  • 18 Sep 1921 Founding of the Republic of the Rif: The Republic of the Rif was established in northern Morocco, led by Abdelkrim El Khattabi. This marked a significant moment in the Rif War against Spanish colonial rule, as the region sought independence and self-governance. source: britannica.com
  • 19 Sep 1921 Mount Mulligan Mine Disaster: A catastrophic explosion occurred at the Mount Mulligan coal mine in Queensland, Australia, resulting in the deaths of 75 miners. This disaster highlighted the dangers of mining and led to changes in safety regulations. source: britannica.com
  • 20 Sep 1921 British Government's Irish Negotiation Proposal: The British government proposed negotiations to resolve the ongoing conflict in Ireland, leading to discussions that would eventually culminate in the Anglo-Irish Treaty. This was a pivotal moment in Irish history. source: britannica.com
  • 21 Sep 1921 Oppau Explosion - Major Industrial Disaster: The Oppau explosion occurred at a BASF plant in Germany, resulting in the deaths of over 500 people. This disaster was one of the largest industrial accidents in history and led to significant changes in safety practices. source: britannica.com
  • 22 Sep 1921 Baltic States Join League of Nations: Estonia, Latvia, and Lithuania were officially admitted to the League of Nations, marking a significant step in their international recognition following independence from Russia after World War I. source: britannica.com
  • 23 Sep 1921 Treaty of Geneva: Danzig's Status Defined: The Treaty of Geneva established the status of Danzig (now Gdańsk, Poland) as a free city, which was a significant political development in post-World War I Europe, affecting regional dynamics. source: britannica.com
  • 24 Sep 1921 Birth of Jim McKay, Legendary Sports Broadcaster: James Kenneth McManus, known professionally as Jim McKay, was born on September 24, 1921, in Philadelphia, Pennsylvania. He became a renowned American television sports journalist, best known for hosting ABC's "Wide World of Sports" from 1961 to 1998. McKay also covered 12 Olympic Games and was acclaimed for his reporting on the Munich massacre at the 1972 Summer Olympics. source: en.wikipedia.org
  • 26 Sep 1921 Swedish Social Democratic Party Gains Power in Riksdag Election: In the September 1921 elections to the Swedish Riksdag, the Social Democratic Party achieved a significant victory, securing a majority and marking a pivotal moment in Swedish politics.
  • 27 Sep 1921 Miklós Jancsó Born in Hungary: Hungarian film director Miklós Jancsó was born on September 27, 1921. He became known for his unique cinematic style and contributions to Hungarian cinema.
  • 28 Sep 1921 International Humanitarian Relief for Russian Famine: On September 28, 1921, international humanitarian organizations initiated relief efforts to address the severe famine in Soviet Russia, providing essential aid to the affected populations.
  • 29 Sep 1921 British invitation to Irish peace negotiations: On September 29, 1921, British Prime Minister David Lloyd George invited Irish representatives to a conference in London to discuss the future of Ireland, leading to the Anglo-Irish Treaty negotiations. source: difp.ie