In 1784, the United States ratified the Treaty of Paris ending the Revolutionary War; Britain followed suit in April 1784.In 1914, Ford Motor Co. greatly improved its assembly-line operation by employing an endless chain to pull each chassis along at its Highland Park, Mich., plant.
In 1943, President Franklin D. Roosevelt, British Prime Minister Winston Churchill and French General Charles de Gaulle opened a wartime conference in Casablanca.
In 1954, Marilyn Monroe and Joe DiMaggio were married at San Francisco City Hall. (The marriage lasted about nine months.)
In 1963, George C. Wallace was sworn in as governor of Alabama with the pledge, “Segregation now, segregation tomorrow, segregation forever!” — a view Wallace later repudiated.
In 1964, former first lady Jacqueline Kennedy, in a brief televised address, thanked Americans for their condolences and messages of support following the assassination of her husband, President John F. Kennedy, nearly two months earlier.
In 1968, the Green Bay Packers of the NFL defeated the AFL’s Oakland Raiders, 33-14, in the second AFL-NFL World Championship game (now referred to as Super Bowl II).
In 1969, 27 people aboard the aircraft carrier USS Enterprise, off Hawaii, were killed when a rocket warhead exploded, setting off a fire and additional explosions.
In 1970, Diana Ross and the Supremes performed their last concert together, at the Frontier Hotel in Las Vegas.
In 1975, the House Internal Security Committee (formerly the House Un-American Activities Committee) was disbanded.
In 1989, President Ronald Reagan delivered his 331st and final weekly White House radio address, telling listeners, “Believe me, Saturdays will never seem the same. I’ll miss you.”
In 1994, President Bill Clinton and Russian President Boris Yeltsin signed an accord to stop aiming missiles at any nation; the leaders joined Ukrainian President Leonid Kravchuk in signing an accord to dismantle the nuclear arsenal of Ukraine.
In 2004, former Enron finance chief Andrew Fastow pleaded guilty to conspiracy as he accepted a 10-year prison sentence. (He was actually sentenced to six years and was released in December 2011.)
In 2010, President Barack Obama and the U.S. moved to take charge in earthquake-ravaged Haiti, dispatching thousands of troops along with tons of aid. Iraq’s electoral commission barred 500 candidates from running in March 2010 parliamentary elections, including a prominent Sunni lawmaker, deepening sectarian divides.