Which accurately describes the rule of charlemagne?

(select all that apply.)

* he continually supported and backed the catholic church and promoted education.
* he sacked the city of constantinople, in modern-day turkey, and renamed it istanbul.
* he was coronated by pope leo iii in ad 800, giving him the divine right to rule over his empire.
* he became emperor of rome and eventually split the empire into eastern and western halves.

* He was coronated by Pope Leo III in AD 800, giving him the divine right to rule over his empire.

Explanation:

Charlemagne was crowned “Emperor of Romans” by Pope Leo III in Saint Peter’s Basilica on Christmas Day in 800 A.D. With the pope crowning him, Charlemagne received the right to rule over his empire by God. This was also very important because the Roman Empire had divided and had been struggling for power with the Byzantine Empire that was based in Constantinople.