Answer:
advancements in arts and knowledge
Explanation:
Charlemagne come to power because he is known for expanding the territory and power of his Kingdom of the Franks, ... its martial pride in the Frankish forces and Charlemagne's cause, and, of course.
D. The Hessians were German mercenaries, or soldiers that fight for money, hired by the British. The British hired them to fight during the American Revolution.