The revolution initially flared up in the eight provinces of Central Luzon . The armed resistance eventually spread throughout the Southern Tagalog region , particularly in Cavite province , where towns were gradually liberated during the early months of the uprising . In 1896 and 1897 , successive conventions at Imus and Tejeros decided the new republic 's fate . In November 1897 , the Republic of Biak-na-Bato was established and a constitution was promulgated by the insurgent government
Imus
Imus Assembly
Philippine Revolution