April 15:
A.D. 1450: The French defeat the English in the Battle of Formigny during the Hundred Years' War.
A.D. 1493: Christopher Columbo meets with Queen Isabella and King Ferdinand of Spain after his return from the Americas.
A.D. 1896: The first modern Olympic Games close in Athens, Greece.
A.D. 1912: The R.M.S. Titanic sinks off the coast of Newfoundland at 2:27 in the morning.