The Kingdom of Aksum was a major trading nation located in the Horn of Africa between 100-940 AD. It played a key role in trade between the Roman Empire and India. Aksum established itself under King Zoskales in 100 AD and grew to control territories in Ethiopia, Eritrea, Sudan, Egypt, and parts of Arabia at its height around 400 AD. The kingdom issued its own coins and created a currency called the Mani. Aksum's influence declined after 640 AD as Islam rose in the region, and it was ultimately conquered in 940 AD.