 The Sangu sent slaves and ivory to representatives of the coast and were the first to adopt the weapons, tactics, and organization of the Ngoni and began to dominate the highlands until a civil war broke out with the death of Merere I.Other groups, including the Hehe (the second to imitate the Ngoni) copied the Sangu, even taking the Sangu regimental names and language forms.Munyigumba of the Muyinga family of the Hehe people, Mkwawa's father, began to form a unified state to be called Uhehe.