Complex sentence: The Miskito Sambu settled near the Wanks (Coco) River, and by the late seventeenth century held the office of General with jurisdiction over the northern portions of the Miskito Kingdom.
Split into simpler sentences: The Miskito Sambu settled near the Wanks (Coco) River. By the late 17th century, their leader held the office of General with jurisdiction over the northern portions of the Miskito Kingdom.