1793 - Jean-Pierre Blanchard made the first successful balloon flight in the U.S.
1799 - British prime minister William Pitt the Younger introduced income tax, at two shillings (10p) in the pound, to raise funds for the Napoleonic Wars.
1905 - In Russia, the civil disturbances known as the Revolution of 1905 forced Czar Nicholas II to grant some civil rights.
1936 - The United States Army adopted the semi-automatic rifle.
1951 - The United Nations headquarters officially opened in New York City.
1969 - The supersonic aeroplane Concorde made its first trial flight, at Bristol.
1972 - The ocean liner Queen Elizabeth was destroyed by fire in Hong Kong harbor.
1972 - British miners went on strike for the first time since 1926.
1995 - Russian cosmonaut Valeri Poliakov, 51, completed his 366th day in outer space aboard the Mir space station, breaking the record for the longest continuous time spent in outer space.
2003 - Archaeologists announced that they had found five more chambers in the tomb of Qin Shihuang, China's first emperor. The rooms were believed to cover about 750,000 square feet.