This Day in History – May 21

Discover important historical events that happened on this day. Explore key moments in politics, science, culture, and more — organized by date and year.

MAY 21, 1138
The Crusades: The siege of Shaizar ended, and the Emir of Shaizar became a vassal of the Byzantine Empire.
The Crusades were a series of religious wars initiated, supported, and sometimes directed by the Christian Latin Church in the medieval period. Read More
MAY 21, 1991
Former Indian prime minister Rajiv Gandhi was assassinated by a suicide bomber in Sriperumbudur, Tamil Nadu.
Rajiv Gandhi was an Indian statesman and pilot who served as the prime minister of India from 1984 to 1989. He took Read More
MAY 21, 1911
Mexican president Porfirio Díaz and the revolutionary Francisco I. Madero signed the Treaty of Ciudad Juárez to end hostilities between each other's forces, concluding the initial phase of the Mexican Revolution.
José de la Cruz Porfirio Díaz Mori was a Mexican general and politician who was the dictator of Mexico from 1876 until Read More

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Famous Birthdays on May 21

Josh Hamilton
1981
American baseball player
(Image Credits)
Peggy Cass
1924
American actress, comedian, and game show panelist (d. 1999)
Kent Hrbek
1960
American baseball player and sportscaster
Chakravarthi V. Narasimhan
1915
Indian Civil Service Officer and former Under Secretary-General of the UN (d. 2003)
Anthony Mundine
1975
Australian rugby league player and boxer
(Image Credits)
Elizabeth Fry
1780
English prison reformer, philanthropist and Quaker (d. 1845)
Manly Wade Wellman
1903
American author (d. 1986)
Haleh Afshar
1944
Baroness Afshar, Iranian-English academic and politician (d. 2022)
(Image Credits)

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Notable Events of May

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