Sulu before Islam 155 Introduction of Islam and the rise of a Mohammedan dynasty in Sulu 158 Establishment of the Mohammedan Church in Sulu and the reign of Abu Bakr 161 Early days of the sultanate 163 Successors of Abu Bakr 163 Figueroa's expedition against Sulu 164 Reasons for hostilities 168 Rule of Batara Shah Tangah 171 Figueroa's expedition against Mindanao 172 Moro raids 175 First Spanish conquest and occupation of Sulu 177 Sulu supremacy in the Archipelago 179 Successors of Bungsu 179 Reign of Sultan Alimud Din I 180 Reign of Sultan Israel 187 Moro pirates 191 Treaty of 1836 with the Sultan of Sulu 194 Text of the treaty 194 Ratification of the treaty by the Queen Regent of Spain 196 Expedition of Governor Claveria 199 Visits to Jolo of Captain Henry Keppel and Sir James Brooke 201 Chapter IV Decline of Sulu 205 Expedition against Jolo 205 Treaty of April 30, 1851 209 Translation of the Sulu text of the treaty of 1851 212 Politico-military government of Mindanao and adjacent islands 214 Chapter V Sulu Under Spanish Sovereignty 221 Occupation of Jolo 221 Rule of Sultan Jamalul A'lam 224 Cession of possessions in Borneo to British North Borneo Company 225 Treaty of July, 1878 226 Translation of the Spanish copy of the treaty 227 Translation of the Sulu text of the treaty 229 Rule of Sultan Badarud Din II 233 Struggle for the sultanate 237 Rule of Sultan Harun 240 Rule of Sultan Jamalul Kiram II 244 Chapter VI Conclusion 247