Which of the following statements about the rivers of the United States and Canada is false? A. The Grand Canyon was formed by the continuous flow of the Columbia River.
B. The Yukon river flows from British Columbia, through Alaska, and into the Bering sea.
C. The Colorado River runs through the Grand Canyon.
D. The Continental Divide acts as a boundary that determines to which ocean rivers flow.

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:

C.about 10% i think