Answer:
C. He acquired land through military conquest.
Explanation:
The main point of the Fourteenth Amendment was giving citizenship to the slaves.
After the passing of the Thirteenth Amendment which officially abolished slavery in the US, the 14th Amendment (passed in 1868) granted citizenship and equal civil and legal rights to African Americans stating that "<em>All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the state wherein they reside.</em>"
Aksum's access to both the Red Sea and the Upper Nile enabled its strong navy to profit in trade between various African (Nubia), Arabian (Yemen), and Indian states. They traded with Roman traders as well as with Egyptian and Persian merchants. The empire was also rich with gold and iron deposits.
The answer is number one which is A