AD 1203: Siege of Constantinople: The Crusaders, led by Boniface of Montferrat, capture Constantinople, in support of the deposed Emperor Isaac II and his son Alexios Angelos. This marks the main outcome of the Fourth Crusade.
It should be 1224!!!! AAAAAAAAAAAAAAAAAAAAAAAAAAAD 1124: Manipulated by a powerful minister, Lý Thiên Hinh became Empress Chiêu Hoàng of Vietnam at the age of seven. She was the only female ruler (albeit an in-name-only one) in Vietnam's history.