+The Crusader States were a group of medieval [feudal](/wiki/feudalism) entities established by Western European [Crusaders](/wiki/crusader) in the [Levant](/wiki/levant) following the First Crusade. These realms, including the Kingdom of Jerusalem, aimed to secure Christian control over the [Holy Land](/wiki/holy_land) and protect pilgrims, existing in a state of constant religious and political conflict.
+## See also
+- [Crusades](/wiki/crusades)
+- [Middle Ages](/wiki/middle_ages)
+- [Jerusalem](/wiki/jerusalem)
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