On This Day

French Guyana, Guadeloupe, Martinique & Reunion become overseas "departments" of France

French Guiana, or Guyane in French, is an overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies.

French Guiana, or Guyane in French, is an overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies. Bordered by Suriname to the west and Brazil to the east and south, French Guiana covers a total area of 84,000 km2 (32,000 sq mi) and a land area of 83,534 km2 (32,253 sq mi). As of January 2026, it is home to 298,554 people. French Guiana is the second-largest region of France, being approximately one-seventh the size of European France, and the largest outermost region within the European Union. It has a very low population density, with only 3.6 inhabitants per square kilometre (9.3/sq mi). About half of its residents live in its capital, Cayenne.

Historical Significance

French Guiana, or Guyane in French, is an overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies.

Events Before

  1. German air raid on Allied airfields at Eindhoven, Saint-Trond, and Brussels

    German air raid on Allied airfields at Eindhoven, Saint-Trond, and Brussels

  2. Franklin D. Roosevelt is sworn in for an unprecedented and never-to-be-repeated fourth term as US President

    Franklin D. Roosevelt is sworn in for an unprecedented and never-to-be-repeated fourth term as US President

  3. Soviet troops liberate Auschwitz and Birkenau Concentration Camps in Poland - now commemorated as International Holocau

    Soviet troops liberate Auschwitz and Birkenau Concentration Camps in Poland - now commemorated as International Holocaust Remembrance Day [1]

  4. WWII: US troops under General Douglas MacArthur enter Manila in the Philippines after a month-long battle, ending three

    WWII: US troops under General Douglas MacArthur enter Manila in the Philippines after a month-long battle, ending three years of Japanese military occupation

  5. Declaration of Liberated Europe is signed at the Yalta Conference by Franklin D. Roosevelt, Winston Churchill, and Josep

    Declaration of Liberated Europe is signed at the Yalta Conference by Franklin D. Roosevelt, Winston Churchill, and Joseph Stalin, declaring that liberated nations are to establish democratic governments through free elections

Events After

  1. Mahatma Gandhi begins a march for peace in East Bengal

    Mohandas Karamchand Gandhi (2 October 1869 – 30 January 1948) was an Indian lawyer, anti-colonial nationalist, and political thinker who employed nonviolent resistance to lead the successful campaign…

  2. Benelux agrees to work on related issues

    Benelux agrees to work on related issues

  3. Britain nationalizes its coal industry

    The Coal Industry Nationalisation Act 1946 (9 & 10 Geo. 6. c. 59) was an Act of the Parliament of the United Kingdom which nationalised, or brought into state control, the coal industry in the United…

  4. French fashion designer Christian Dior presents his first influential collection, named the "New Look"

    French fashion designer Christian Dior presents his first influential collection, named the "New Look"

  5. Earl Mountbatten of Burma is appointed the last viceroy of India to oversee the move to independence

    The partition of India in 1947 was the division of British India into two independent dominion states, the Union of India and Dominion of Pakistan.

More from the 1940s

Frequently Asked Questions

What happened on March 19, 1946?
French Guiana, or Guyane in French, is an overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies. Bordered by Suriname to the west and Brazil to the east and south, French Guiana covers a total area of 84,000 km2 (32,000 sq mi) and a land area of 83,534 km2 (32,253 sq mi). As of January 2026, it is home to 298,554 people.
Why is French Guyana, Guadeloupe, Martinique & Reunion become overseas "departments"... significant?
French Guiana, or Guyane in French, is an overseas department and region of France located on the northern coast of South America in the Guianas and the West Indies.

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