Complex sentence: Although, some accounts read at least 900 square miles Nwaguru Jason, E.N. (1973) Aba and British Rule, and in 1979, their population was held at an estimate of approximately 1.5 million people.
Split into simpler sentences: Although, some accounts read at least 900 square miles Nwaguru Jason, E.N. (1973) Aba and British Rule. In 1979, their population was held at an estimate of approximately 1.5 million people.