Complex sentence: He signed a treaty with the Caliph on 28 October 1891, and left gifts before moving on to the trading center of Kano, then via Hadejia to Kuka.
Split into simpler sentences: He signed a treaty with the Caliph on 28 October 1891, and left gifts. From Sokoto he journeyed on to the trading center of Kano, then via Hadejia to Kuka.