1457 - Gutenberg Bible became the first printed book.
1719 - Frederick William abolished serfdom on crown property in Prussia.
1733 - Joseph Priestly invented carbonated water.
1841 - Englishman Orlando Jones patented cornstarch.
1873 - Slavery was abolished in Puerto Rico.
1902 - Great Britain and Persia agreed to link Europe and India by telegraph.
1903 - Niagara Falls ran out of water due to a drought.
1905 - Child miners in Britain received a maximum 8-hour workday.
1906 - France lost the first ever rugby game ever played against Britain.
1915 - A German zeppelin made a night raid on Paris railway stations.
1935 - Persia was renamed Iran.
1945 - The Arab League was formed with the adoption of a charter in Cairo, Egypt.
1946 - The British granted Transjordan independence.
1954 - The London gold market reopened for the first time since 1939.
1960 - A.L. Schawlow & C.H. Townes obtained a patent for the laser. It was the first patent for any laser.
1965 - U.S. confirmed that its troops used chemical warfare against the Vietcong.
1977 - Indira Ghandi resigned as the prime minister of India.
1980 - People for Ethical Treatment of Animals (PETA) was founded by Ingrid Newkirk and Alex Pacheco.
1995 - Russian cosmonaut Valeri Polyakov returned to Earth after setting a record for 438 days in space.
2002 - A collection of letters and cards sent by Princess Diana of Wales sold for $33,000. The letters and cards were written to a former housekeeper at Diana's teenage home.