WHAT ALL HAPPENED FEBRUARY TO AUGUST 1842
Find out what all happened February to August 1842

Treaty of Nanking signing ends the First Opium War. (29. August 1842)

The first documented discovery of gold in California occurs at Rancho San Francisco, six years before the California Gold Rush. (9. March 1842)

The Webster–Ashburton Treaty is signed, establishing the United States–Canada border east of the Rocky Mountains. (9. August 1842)

Ether anesthesia is used for the first time, in an operation by the American surgeon Dr. Crawford Long. (30. March 1842)

The Relief Society of the Church of Jesus Christ of Latter-day Saints is formed; (17. March 1842)

American Indian Wars: Second Seminole War ends, with the Seminoles forced from Florida to Oklahoma. (14. August 1842)

John Francis attempts to murder Queen Victoria as she drives down Constitution Hill in London with Prince Albert. (30. May 1842)

John Greenough is granted the first U.S. patent for the sewing machine. (21. February 1842)

A train derails and catches fire in Paris, killing between 52 and 200 people. (8. May 1842)

The Lombard Street Riot erupts in Philadelphia, Pennsylvania, United States. (1. August 1842)

Battle of Debre Tabor: Ras Ali Alula, Regent of the Emperor of Ethiopia defeats warlord Wube Haile Maryam of Semien. (7. February 1842)

Giuseppe Verdi's third opera, Nabucco, receives its première performance in Milan; its success establishes Verdi as one of Italy's foremost opera writers. (9. March 1842)