Human geographers have noticed distinct spatial patterns in the distribution of agricultural practices around the world. Discuss how climate, soil, and population density impact the type of agriculture practiced in a region. Compare the type of agriculture practiced in the Eastern United States and the type of agriculture practiced in Northern Africa. Discuss the factors that influence agricultural practices in each region. Define regional agricultural interdependence. Discuss ONE example of regional agricultural independence in the world today.

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: