Complex sentence: Another Igbo kingdom to form was the Arochukwu kingdom which emerged after the Aro-Ibibio wars from 1630-1720, and went on to form the Aro Confederacy which dominated midwestern and eastern Nigeria with pockets of influence in Equatorial Guinea and Cameroon.
Split into simpler sentences: Another Igbo kingdom to form was the Arochukwu kingdom which emerged after the Aro-Ibibio wars from 1630-1720. The Aro Confederacy dominated midwestern and eastern Nigeria with pockets of influence in Equatorial Guinea and Cameroon.