Complex sentence: Abeokuta was founded around 1830 by Egba people after the collapse of the Oyo Empire into internecine warfare, seeking a strong defensive position against slave raiders from Dahomey.
Split into simpler sentences: Abeokuta was founded around 1830 by Egba people after the collapse of the Oyo Empire into internecine warfare. The city was founded as a strong defensive position against slave raiders from Dahomey.