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50. Arabian peninsula
51. The Suez Canal
52. Fish, oil, natural gas
53. Beneficial trade regulations and a number of free zones
54. They are forbidden from traveling, conducting official business, or undergoing certain medical procedures without their male guardian
55. Judaism, christianity, and Islam
56. Judaism, christianity, and Islam

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: