Complex sentence: The Asantehene is the ruler of the Ashanti people, while today it is a strictly ceremonial role, it was once a position of great power as the leader of the Ashanti Confederacy.
Split into simpler sentences: The Asantehene is the ruler of the Ashanti people. While today it is a strictly ceremonial role, it was once a position of great power as the leader of the Ashanti Confederacy.