Arabic was the official language in Islamic empire during the 400 years after Muhammad during that time period also gradually be
come the spoken language of most the people in the middle east except a. Anatolia and north Africa
b. Persia and Egypt
c. Persia and Palestine
d. Anatolia and Persia
They thought it was necessary because they had to check and make sure each branch doesn't go over their limit of power. I hope that answers your question.
