Europe is a multicultural region, meaning that a. all people in the region have the same ethnic background b. all countries in the region were once communist c. the region has many different ethnic groups and languages d. governments in the region do not tolerate diversity

The answer would be C. The region has many different ethnic groups and languages. 

C...the geography and language Distribution make disintegration a forgone conclusion

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:

Answerhighlands and forests;