How did the Muslim conquest of Africa affect the kingdom of Aksum?

The Muslim conquest of Africa affected the kingdom of Aksum badly and it started to decline.

Explanation:

The African kingdom Axum was located on the edge of the Northern highlands of Red Sea. It was discovered during the first century, expanded from 3rd to 6th century, and then survived as a small political entity after Muslims took it. It had caused the shift of power southward. The Persians ended involvement of Ethiopians in southern Arabia and the Muslims replaced the previous Aksumites of the Red Sea.