Answer:
I think its C) Caste System
Emperors
They the big boys of the Roman empire
I'd say d. The religious freedoms because of,
"Traditionally, Isabella has been regarded as the living symbol of the religious awakening in Spain, but an examination of the letters exchanged between the king and the queen shows that they acted in perfect accord, moved by the same fanatical urge."
Do you have answer choices??
Both kingdoms grew wealthy from taxing and controlling trade routes
