Question

who became the first crusader ruler of jerusalem?
pope urban ii
alexis i comnenus
godfrey of bouillon
bernard of clairvaux

Explanation:

After the First Crusade captured Jerusalem in 1099, Godfrey of Bouillon was chosen as its ruler. Pope Urban II was the pope who initiated the First Crusade. Alexis I Comnenus was the Byzantine emperor who sought help from the West. Bernard of Clairvaux was a prominent Cistercian monk and preacher in the 12th - century.

Answer:

Godfrey of Bouillon