The Kingdom of Axum, the Modern-Day Ethiopia, Was Unusual in Africa

The kingdom of Axum, the modern-day Ethiopia, was unusual in Africa, in that its people

A) were quick converts to Islam.
B) became heavily involved with Arab traders by the 7^th century.
C) believed that their kings were tied to biblical lines of descent.
D) maintained the strongest presence along the Nile through the 12^th century.
E) managed to convert their Egyptian neighbors to Christianity.