Today in History: September 20

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September 19 September 21

0480

Themistocles and his Greek fleet win one of history's first decisive naval victories over Xerxes' Persian force off Salamis.

1378

The election of Robert of Geneva as anti-pope by discontented cardinals creates a great schism in the Catholic church.

1519

Ferdinand Magellan embarks from Spain on a voyage to circumnavigate the world.

1561

Queen Elizabeth of England signs a treaty at Hampton Court with French Huguenot leader Louis de Bourbon, the Prince of Conde. The English will occupy Le Havre in return for aiding Bourbon against the Catholics of France.

1565

Pedro Menendez of Spain wipes out the French at Fort Caroline, in Florida.

1604

After a two-year siege, the Spanish retake Ostend, the Netherlands, from the Dutch.

1784

Packet and Daily, the first daily publication in America, appears on the streets.

1806

Explorers Meriwether Lewis and William Clark pass the French village of La Charette, the first white settlement they have seen in more than two years.

1830

The National Negro Convention convenes in Philadelphia with the purpose of abolishing slavery.

1850

The slave trade is abolished in the District of Columbia.

1853

The Allies defeat the Russians at the Battle of Alma on the Crimean Peninsula.

1863

Union troops under George Thomas prevent the Union defeat at Chickamauga from becoming a rout, earning him the nickname "the Rock of Chickamauga."

1934

Bruno Hauptmann arrested for the kidnapping and murder of the Lindbergh baby.

1952

Scientists confirm that DNA holds hereditary data.

1971

Hurricane Irene becomes the first hurricane known to cross from the Atlantic to Pacific, where it is renamed Hurricane Olivia.

1973

In a pro tennis bout dubbed "The Battle of the Sexes," Billie Jean King beats Bobby Riggs at the Houston Astrodome in Texas.

1977

Socialist Republic of Vietnam admitted to the United Nations.

1984

Suicide car bomber attacks US embassy in Beirut, Lebanon, killing 22.

1985

Australia introduces a capital gains tax.

1990

South Ossetia declares its independence from George in the former Soviet Union.

2000

British MI6 Secret intelligence Service building in London attacked by unidentified group using RPG-22 anti-tank missile.

2001

US Pres. George W. Bush, addressing a joint session of Congress, declares a "war on terror.".

2008

A truck loaded with explosives detonates by Marriott hotel in Islamabad, Pakistan, killing 45 and injuring 226.

2011

US military ends its "Don't Ask, Don't Tell" policy and allows gay men and women to serve openly.