Answer:
The author provides background information so that the reader knows what caused the death of the well-known Lieutenant
Colonel Custer
Explanation:
The answer to the question is A).
They conquered the Kingdom of Kush.[citation needed] At its height, Aksum controlled northern Ethiopia, Eritrea, northern Sudan, southern Egypt, Djibouti, Western Yemen, and southern Saudi Arabia, totalling 1.25 million square kilometers.
