First Crusade

1096–1099 Christian re-conquest of the Holy Land

The First Crusade (1096–1099) was the first of a series of religious wars, or Crusades, which were initiated, supported and at times directed by the Latin Church in the Middle Ages. Their aim was to return the Holy Land to Christian rule after its conquest by the Rashidun Caliphate in the 7th century. By the 11th century, although Jerusalem had then been ruled by Muslims for hundreds of years, the practices of the Seljuk rulers in the region began to threaten local Christian populations, pilgrimages from the West, and the Byzantine Empire itself.

From Wikipedia, under CC BY-SA. More on occurri.