Knights were given land in return for a. their freedom b. cash and goods c. working the land d. military allegiance

Knights were given land in return for military allegiance. The correct option among all the options that are given in the question is the last option or option "d". Knights were basically the warriors who fought on horse backs. I hope that this is the answer you were looking for and it has come to your help.

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor: