Aksum developed a coin currency and a unique architectural style called a "stelae", which consisted of large stone pillars. But in A.D. 710, the Muslims conquered Aksum and destroyed its big trading city known as Adulis. | Aksum developed a coin currency and a unique architectural style called a "stelae", which consisted of large stone pillars. But in A.D. 710, the Muslims conquered Aksum and destroyed its big trading city known as Adulis. |