The Seattle World’s Fair (Century 21 Exposition) opens. It is the first World’s Fair in the United States since World War II. The Seattle World’s…
History
20 April 1902
Pierre and Marie Curie refine radium chloride Pierre and Marie Curie’s work on refining radium chloride was a significant milestone in the field of radioactivity,…
19 April 1927
Mae West is sentenced to ten days in jail for obscenity for her play Sex. Mae West, a bold and charismatic figure in American entertainment,…
18 April 1897
The Greco-Turkish War is declared between Greece and the Ottoman Empire. The Greco-Turkish War of 1897, also known as the Thirty Days’ War, was a…
17 April 1961
Bay of Pigs Invasion: A group of Cuban exiles financed and trained by the CIA lands at the Bay of Pigs in Cuba with the…
16 April 1972
Apollo program: The launch of Apollo 16 from Cape Canaveral, Florida. Apollo 16 was the tenth manned mission in the United States Apollo space program,…
15 April 1945
Bergen-Belsen concentration camp is liberated. Bergen-Belsen was a Nazi concentration camp located in Lower Saxony, Germany, near the town of Bergen near Celle. Originally established…
14 April 1639
Thirty Years’ War: Forces of the Holy Roman Empire and Electorate of Saxony are defeated by the Swedes at the Battle of Chemnitz, ending the…
13 April 1909
The 31 March Incident leads to the overthrow of Sultan Abdul Hamid II. Sultan Abdul Hamid II was the 34th Sultan of the Ottoman Empire,…
12 April 1955
The polio vaccine, developed by Dr. Jonas Salk, is declared safe and effective. The development of the polio vaccine is a significant milestone in medical…