On June 12, 1941, Mbaise became a federation of five clans: the Agbaja (Nguru, Okwuato, Enyiogugu, Obiangwu, and Umuohiagu), Ekwerazu, Ahiara, Ezinihitte, and Oke-Uvuru. A treasury was opened in Enyiogugu in 1942, and was transferred to Aboh in 1948. Obiangwu and Umuohiagu, which had been parts of Agbaja, joined Ngor Okpala in 1957. Mbaise now had three local governments: Ahiazu, Aboh-Mbaise, and Ezinihitte. Between 1955 and 1958, the Mbaise County Council began two landmark development projects: Mbaise Secondary School and Mbaise Joint Hospital (now General Hospital), both in Aboh.