Today in history: Sept. 11
Nearly 3,000 people were killed as 19 al-Qaida hijackers seized control of four jetliners, sending two of the planes into New York’s World Trade Center, and more events that happened on this day in history.
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1789: Alexander Hamilton

In 1789, Alexander Hamilton was appointed the first U.S. Secretary of the Treasury.
1936: Boulder Dam

In 1936, Boulder Dam (now Hoover Dam) began operation as President Franklin D. Roosevelt pressed a key in Washington to signal the startup of the dam’s first hydroelectric generator.
1941: The Pentagon

In 1941, groundbreaking took place for the Pentagon.
1972: BART

In 1972, Northern California’s Bay Area Rapid Transit system began operations.
1972: Munich Summer Olympics

In 1972, the troubled Munich Summer Olympics ended.
1973: Chile

In 1973, Chilean President Salvador Allende (ah-YEN’-day) died during a violent military coup.
2001: World Trade Center

In 2001, nearly 3,000 people were killed as 19 al-Qaida hijackers seized control of four jetliners, sending two of the planes into New York’s World Trade Center, one into the Pentagon and the fourth into a field in western Pennsylvania.
2006: George W. Bush

In 2006, in a prime-time address, President George W. Bush invoked the memory of the victims of the 9/11 attacks as he staunchly defended the war in Iraq, though he acknowledged that Saddam Hussein was not responsible for the attacks.
2008: John McCain and Barack Obama

In 2008, presidential candidates John McCain and Barack Obama put aside politics as they visited ground zero together on the anniversary of 9/11 to honor its victims.
2010: Barack Obama

Ten years ago: Speaking at the Pentagon, President Barack Obama appealed to the nation to honor the memory of the September 11 victims by hewing to the values of diversity and tolerance.
2010: Kim Clijsters

Ten years ago: Kim Clijsters won a second consecutive U.S. Open championship and third overall, easily beating Vera Zvonareva (zvahn-uh-RAY’-vuh) 6-2, 6-1.
2010: New York

Ten years ago: In New York, a morning ceremony of remembrance gave way to an afternoon of protests and counter-protests over a proposed Islamic center near ground zero.
2015: Mecca

Five years ago: A crane collapsed onto the Grand Mosque in Mecca, killing 111 people ahead of the annual hajj pilgrimage.
2015: Rick Perry

Five years ago: Former Texas Gov. Rick Perry ended his second bid for the Republican presidential nomination, becoming the first major candidate of the 2016 campaign to give up on the White House.
2015: Roberta Vinci

Five years ago: Roberta Vinci stunned Serena Williams to end her Grand Slam bid in one of the greatest upsets in tennis history; the 43rd-ranked Italian won 2-6, 6-4, 6-4 in the U.S. Open semifinals.
2019: T. Boone Pickens

One year ago: Oil tycoon T. Boone Pickens died at his Dallas home; he was 91.
2012: Benghazi

In 2012, a mob armed with guns and grenades launched a fiery nightlong attack on a U.S. diplomatic outpost and a CIA annex in Benghazi, Libya, killing U.S. Ambassador Chris Stevens and three other Americans.