Jolo in the context of "Battle of Bud Bagsak"

The Sulu Archipelago (Tausug: Kapū'-pūan sin Sūg; Sulat Sūg: كَفُوْءْفُوْأَنْ سِنْ سُوْݢْ‎; Filipino: Kapuluan ng Sulu) is a chain of islands in the Pacific Ocean, in the southwestern Philippines. The archipelago forms the northern limit of the Celebes Sea and southern limit of the Sulu Sea. The Sulu Archipelago islands are within the Mindanao island group, consisting of the Philippines provinces of Basilan, Sulu, and Tawi-Tawi; hence the archipelago is sometimes referred to as Basulta, derived from the first syllables of the three provinces.

The archipelago is not, as is often supposed, the remains of a land bridge between Borneo and the Philippines. Rather, it is the exposed edge of small submarine ridges produced by tectonic tilting of the sea bottom. Basilan, Jolo, Tawi-Tawi and other islands in the group are extinct volcanic cones rising from the southernmost ridge. Tawi-Tawi, the southernmost island of the group, has a serpentine basement-complex core with a limestone covering. This island chain is an important migration route for birds.

The Moro Rebellion (1902–1913) was an armed conflict between the Moro people and the United States military during the Philippine–American War. The rebellion occurred after the conclusion of the conflict between the United States and First Philippine Republic, and saw the US move to impose its authority over the Muslim states in Mindanao, Jolo and the neighboring Sulu Archipelago.

Tawitawi Island (also spelled Tawi Tawi or Tawi-Tawi) is a Philippine island in the Sulu Archipelago between the Sulu Sea and Celebes Sea, about 64 kilometres (40 mi; 35 nmi) east of Borneo. It is the main island of Tawi-Tawi Province, with a little more than half the province's 1,087.40 km (419.85 sq mi) land area.

Tawitawi has an area of 580.5 square kilometres (224.1 sq mi), making it the 21st-largest island of the Philippines, and the third-largest island in the Sulu Archipelago (after Basilan and Jolo). It has a shoreline length of 152.2 kilometres (94.6 mi), and a maximum elevation of 549 metres (1,801 ft).