what is the difference between datu and sultan
Datu In large coastal polities such as those in Maynila, Tondo, Pangasinan, Cebu, Panay, Bohol, Butuan, Cotabato, Lanao, and Sulu,[2] several datus brought their loyalty-groups, referred to as "barangays" or "dulohan", into compact settlements which allowed greater degrees of cooperation and economic specialization. In such cases, datus of these barangays would then select the most senior or most respected among them to serve as what scolars call a "paramount leader, or "paramount datu."[3][1] The titles used by such paramount datu changed from case to case, but some of the most prominent examples were: Sultan in the most Islamized areas of Mindanao; Lakan among the Tagalog people; Thimuay among the Subanen people; Rajah in polities which traded extensively with Indonesia and Malaysia; or simply Datu in some areas of Mindanao and the Visayas.[4]