The correct answer is true.
It is true that Aksum's trading partners included Greece, India, Yemen, and Persia, but because of barriers such as desert and mountains, they usually did not trade with other Africans from the interior of the continent.
One of the most important kingdoms in ancient Africa was the Aksum empire. It existed from the first century to the 8th CE, and they inhabited the territories of what now is Sudan, Ethiopia, and years later Aksum spread through Yemen and South Arabia. They developed a trade that none other empires of its time and created a great navy that navigated the Nile River and the Red Sea to protect its trade routes.
