What were they?
The seven Major crusades (1-3)
In 1095 CE the Europeans fought the first crusade. It was mainly peasants who fought it but they lost.
1147-1149: the second crusade.
This crusade was probably reinforced by the thought of the previous loss. They had a major loss in two places, and from the one place the did win over did not help them with the rest.
1189-1192: the third crusade.
This crusade was a great crusade with the first victory.
1202-1204: the fourth crusade
This crusade was made to capture Muslim-controlled Jerusalem by invading Egypt, instead, crusaders from west Europe invaded the christian city of city of Constantinople.
1213–1221: the fifth crusade
The fifth was another attempt to regain the holy land and Jerusalem. It failed
1228: The sixth crusade:
An attempt to gain Jerusalem again after the failure of the fifth.
1245-1254: the seventh crusade:
This one was led by Louis the fourth from France
The major seven and many small ones dated from 1096 to 1291