Answer:
The declaration of Charlemagne as Holy Roman Emperor implied that Pope could choose political leaders.
Explanation:It was none other than Pope Leo III of Rome who coronated Charlemagne as the emperor of the Holy Roman Empire in 800 AD.The declaration of the emperor of the Holy Roman Empire was then referred to as 'imperial coronation'.Pope, the religious leader of the entire Christian fraternity was thus, the most powerful figure in the Holy Roman Empire.