Sulu is a province of the Philippines in the Sulu Archipelago and part of the Bangsamoro Autonomous Region in Muslim Mindanao (BARMM). Its capital is Jolo on the island of the same name. Maimbung, the royal capital of the Sultanate of Sulu, is also located in the province. Sulu is along the southern border of the Sulu Sea and the northern boundary of the Celebes Sea. Out of all 82 provinces in the Philippines, it is the poorest, as evidenced by it having the highest poverty rate. (Read more)