What was the investiture contest? how did this spark conflict between the church and state?

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Explanation:

it was a conflict between church and state in medieval Europe over the ability to install high church officials through investiture. By undercutting imperial power, the controversy led to nearly 50 years of civil war in Germany. it set the stage for the religious and political system of the High Middle Ages.

answer; (c) slaves brought to the americans from africa;