■ In 1821, Napoleon Bonaparte, 51, died in exile on the island of St. Helena. ■ In 1862, Mexican troops defeated French occupying forces in the Battle of Puebla. ■ In 1866, the town of Waterloo, N.Y., observed a day honoring the fallen soldiers of the Civil War. ■ In 1891, New York's Carnegie Hall (then named "Music Hall") had its official opening night, featuring Russian composer Peter Ilyich Tchaikovsky as a guest conductor. read more