- The crusaders were a Christian army from Europe who had set out on a mission to recapture the Holy Land from Muslim control.
- Led by Godfrey of Bouillon, Raymond of Toulouse, and Bohemond of Taranto, the crusaders laid siege to Jerusalem on June 7, 1099
- After weeks of intense fighting, the crusaders managed to breach the city walls and took control of the city on July 15, 1099.
- Thousands of Muslims and Jews were killed or enslaved while Christian control was established over the city.
- Godfrey of Bouillon was declared the first ruler of the Kingdom of Jerusalem, which would last for nearly 88 years until it was recaptured by the Muslims in 1187.