Associated Press

On Jan. 14, 1784, the United States ratified the Treaty of Paris ending the Revolutionary War.

In 1943, President Franklin D. Roosevelt, British Prime Minister Winston Churchill and French General Charles de Gaulle opened a wartime conference in Casablanca.

In 1967, the Sixties’ “Summer of Love” unofficially began with a “Human Be-In” involving tens of thousands of young people at Golden Gate Park in San Francisco.

In 1994, President Bill Clinton and Russian President Boris Yeltsin joined Ukrainian President Leonid Kravchuk in signing an accord to dismantle the nuclear arsenal of Ukraine.

In 2013, cyclist Lance Armstrong ended a decade of denial by confessing to Oprah Winfrey during a videotaped interview that he had used performance- enhancing drugs to win the Tour de France.