Which of the Following Characterized Charlemagne's Rule

Multiple Choice

Which of the following characterized Charlemagne's rule?

A) His empire was smaller in both population and wealth compared to regimes of the Islamic world.
B) He ruled for fewer than twenty years but managed to halt the slave trade.
C) His empire incorporated much of the old Byzantine Empire.
D) He introduced to Europe an urban-based culture that valued educated citizens over warriors.