Which statement describes the relationship between the papacy and Charlemagne during the early Middle Ages? a They often needed each other's help in order to maintain power. They frequently encouraged attacks on each other's power. They seldom came to each other's aid when power was threatened. They acted independently of each other to prevent disputes.?​

It might be A, but I'm not sure

Explanation:

the historians cited in the article all agree with one another about the cause of the civil war. despite coming from different backgrounds and cultures, the historians agree that slavery was the root cause of the civil war. the fact that all these historiansgenerally agree with one another makes their shared viewpoints more reliable and valid, especially because the historians have different backgrounds and all work for the well-respected institutions of howard university, clemson university, and the university of colorado.