December 19th

Election of First female President of South Korea. Park Geun-hye is the eleventh President of South Korea and also holds the distinction of being the first female head of state in Northeast Asia. She assumed office in February 2013.
Park Geun-hye
Muammar al-Qaddafi of Libya announced that his country would discontinue development of weapons of mass destruction.
Disarmament of Libya
President Bill Clinton impeached on two counts by the House of Representatives.
Impeachment of Bill Clinton
The Soviet Union announced it had freed dissident Andrei Sakharov from internal exile and pardoned his wife, Yelena Bonner.
Yasser Arafat
Hong Kong Treaty Signed. Formally known as the Joint Declaration of the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the People's Republic of China on the Question of Hong Kong, the Sino-British Treaty was signed by Zhao Ziyang of China and Margaret Thatcher of the United Kingdom in Beijing. The treaty decided the fate of Hong Kong as a territory of China from July 1, 1997.
Sino-British Joint Declaration
Nelson A. Rockefeller was sworn in as vice president, replacing Gerald R. Ford, who became president when Richard M. Nixon resigned.
Gerald Ford
Apollo 17 returns to Earth. The last mission of the United States' Apollo program spent 12 days in space and was the first human spaceflight launched at night from the United States. The three-member crew spent more time orbiting the Moon and on the surface of the Moon than during any other Moon landings. It was also the last time humans set foot on Earth's only natural satellite.
Apollo 17
A Clockwork Orange released. The dystopian film was directed by Stanley Kubrick and was based on a novella of the same name by British author, Anthony Burgess. Based in a futuristic London, the film opened with critical acclaim, though the centrality of violence in it drew a lot of mainstream criticism. Today, the movie is considered to be one of the best movies of the 20th century.
A Clockwork Orange (film)
1st radio broadcast from space (President Eisenhower voice "To all mankind, America's wish for Peace on Earth & Good Will to Men Everywhere").
SCORE (satellite)
Tibet's Dalai Lama flees Chinese invasion.
History of Tibet (1950–present)
War broke out in Indochina as troops under Ho Chi Minh launched widespread attacks against the French.
History of Vietnam since 1945
British Broadcasting Corp begins transmitting overseas.
BBC World Service
Theresa Vaughn, 24, confesses in court in Sheffield, England, to being married 61 times over 5 years in 50 cities in three countries.
Catholic Church in England and Wales
A coal mine explosion in Jacobs Creek, Pa., killed 239 workers.
Darr Mine disaster
Sherlock Holmes' The Adventure of Beryl Coronet begins on this date. The short detective story written by Arthur Conan Doyle and featuring detective Sherlock Holmes and his friend and assistant Dr. Watson began on this date with the theft of 3 precious crystals from a coronet. The story is the 11th in a series of 12 stories contained in The Adventures of Sherlock Holmes.
The Adventure of the Beryl Coronet
Charles Dickens' Yuletide tale, "A Christmas Carol," was first published in Britain.
Christmas pudding
William Pitt the Younger becomes the youngest ever British Prime Minister at age 24.
William Pitt the Younger
Gen. George Washington led his army of about 11,000 men to Valley Forge, Pa., to camp for the winter.
Military career of George Washington
Thomas Paine published his first American Crisis essay, in which he wrote, 'These are the times that try men's souls.'.
James Monroe
Benjamin Franklin began publishing "Poor Richard's Almanac.".
Poor Richard's Almanack