Which of these events related to Christian crusades occurred last in 1261?
a.The childrens crusade resulted in the enslavement of thousands of children . .
b.French and Norman Nobles defeat the suljek turks and free the palestine from the muslims . .
c.The byzantines recaptured constanople and end the latin empire . .
d.Saladin conqueres the christian crusaders state of the middle east.