Answer:
Byzantine empire:
B. centered on Constantinople
E. Eastern Orthodox Church
C. Greek was the official language.
Roman empire:
A. centered on Rome
D. Latin was the official language.
F. Roman Catholic Church
Explanation:
With the fall of the Roman empire, it was evident that the Byzantine empire was what was left from the former glory of the empire, and with that they grew differences from the former Roman Empire, they created they own Christian Church to develop political power in their territories, they set greek as their official language, honouring their past glory. The roman empire had its center in Rome, they used Latin as their official language and they preserved the Catholic Church in Rome.
