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Today In History Star September 20
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1973
Billie Jean King vs. Bobby Riggs
On this day, tennis great Billie Jean King faced self-described “male chauvinist pig” Bobby Riggs in the much-publicized “Battle of the Sexes.” More than 90 million viewers watched as King defeated the former Grand Slam champion in straight sets. The spectacle became a landmark moment for women’s tennis, and a highly visible victory in the broader fight for gender equality.
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September 20, 1973: A lot was at stake in the Battle of the Sexes
© Bettmann/Getty Images; Photo Illustration Encyclopædia Britannica, Inc.
Featured Event
Rome: Piazza Navona
© Stephen Simpson/FPG International
On this day in 1870, Italian troops occupied Rome, leading to the eventual incorporation of Rome into the Kingdom of Italy and the limiting of papal governing authority to the Vatican itself and a small district around it.
Featured Biography
Featured Biography
Encyclopædia Britannica, Inc.

Practically alone among the American writers of his generation, [Sinclair] put to the American public the fundamental questions raised by capitalism in such a way that they could not escape them.

Edmund Wilson

American novelist Upton Sinclair, born this day in 1878, wrote The Jungle (1906), a landmark work that aroused indignation at impurities in processed meats and helped bring about federal food-inspection laws.

Famous Birthdays
1941
Dale Chihuly
American artist
1940
Asō Tarō
prime minister of Japan
1925
Ananda Mahidol
king of Siam
1884
Maxwell Perkins
American editor
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More on September 20

Rows of small houses in San Juan, Puerto Rico with collapsed roofs and severe structural damage, surrounded by overgrown vegetation and high-rise buildings in the background.
© cestes001—iStock/Getty Images
2017
Hurricane Maria struck Puerto Rico, causing more than $90 billion in damages and, according to government officials, nearly 3,000 deaths. [Test your knowledge of historical disasters.]
President Barack Obama sits at a desk signing the repeal of Don't Ask, Don't Tell, surrounded by smiling lawmakers and officials in Washington, D.C.
Chuck Kennedy—Official White House Photo
2011
Don’t Ask, Don’t Tell—a U.S. military policy that theoretically lifted a ban on homosexuals in the armed forces, provided that individuals kept their sexuality private—officially ended. [Take our quiz about U.S. history.]
Cal Ripken, Jr. smiles while wearing a suit and lanyard, standing on the field at Tropicana Field before a 2008 American League Championship Series game.
© Elsa/Getty Images
1998
American professional baseball player Cal Ripken, Jr., ended his streak of 2,632 consecutive games played. [How much do you know about baseball?]
United Nations
Encyclopædia Britannica, Inc.
1960
Thirteen newly independent African countries—Cameroon, the Central African Republic, Chad, Republic of the Congo-Brazzaville (now Republic of the Congo), Republic of the Congo-Léopoldville (now Democratic Republic of the Congo), Côte d’Ivoire, Dahomey (now Benin), Gabon, Malagasy Republic (now Madagascar), Niger, Somalia, Togo, and Upper Volta (now Burkina Faso)—joined the United Nations, marking a major milestone in African decolonization.
Large blue banner reading Festival de Cannes hangs above the red carpeted steps of the Palais des Festivals et des Congres, with people walking and sitting outside.
© Vinicius Tupinamba/Shutterstock.com
1946
Delayed because of World War II, the first Cannes film festival began, and it became one of cinema’s major annual events. [Test your knowledge of movies.]
Wallace Hume Carothers, wearing glasses and a suit, sits at a laboratory bench with scientific glassware and equipment in the background.
Encyclopædia Britannica, Inc.
1938
E.I. du Pont de Nemours & Company and scientist Wallace Hume Carothers are granted a patent for nylon, the first commercially produced synthetic polymer fiber. Initially popular in fashion, the material gained further prominence during World War II because of its strength, elasticity, lighter weight, and resistance to mildew and heat. [Learn about the people, places, and events that shaped the 1930s.]
Johannesburg city skyline with tall buildings and towers rising above a mix of greenery, roads, and low-rise structures in the foreground.
© Neil Wigmore/Shutterstock.com
Map showing the principal battle sites of the Crimean War (1853-56) around the Black Sea region, including Crimea. The left panel provides a regional view with locations such as Sevastopol, Sinope, and Constantinople marked, while the right panel zooms in on Crimea, highlighting battles at Alma, Balaklava, Inkerman, and the prolonged siege of Sevastopol. The map distinguishes the territories of the Russian Empire and the Ottoman Empire.
Encyclopædia Britannica, Inc.
1854
British and French forces defeated the Russians at the Battle of the Alma, a victory that left the Russian naval base of Sevastopol vulnerable and endangered the entire Russian position in the Crimean War. [Take our history of war quiz.]
France
Encyclopædia Britannica, Inc.
1792
The French Legislative Assembly was replaced by the National Convention, marking the formal beginning of the First Republic. [Test your knowledge of French history.]
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Image: Encyclopædia Britannica, Inc.
1761
The Portuguese Jesuit Gabriel Malagrida was burned to death for his involvement in the Conspiracy of the Távoras.
Ferdinand Magellan
© Universal Art Archive/Alamy
1519
Portuguese explorer Ferdinand Magellan departed from Sanlúcar de Barrameda, Spain, on a quest to circumnavigate the globe; although he died during the voyage, the expedition achieved its goal. [Take our exploration and discovery quiz.]