The Kingdom of Aksum also known as the Kingdom of Axum, or the Aksumite Empire, was a kingdom in East Africa and South Arabia from classical antiquity to the Middle Ages, based in what is now northern Ethiopia and Eritrea, and spanning present-day Djibouti and Sudan. Emerging from the earlier Dʿmt civilization, the kingdom was founded in 1st century. The city of Axum served as the kingdom's capital for many centuries until it relocated to Kubar in the 9th century due to declining trade connections and recurring external invasions.