Conversation so far:
who were the main participants and what was the primary reason for the first crusade
The First Crusade was an attempt to recapture the Holy Land, called for by Pope Urban II to aid the Byzantine empire against the Seljuq Turks.
who won the first crusade
The first crusade was a crusader victory.

Question: what year was the crusade
Self-contained rewrite: what year was the first crusade