In 1897, the British sacked the Benin Empire, effectively leaving the Esans free from British rule. In 1899, the British led an invasion into the Esan kingdoms that lasted for seven years. Esanland proved to be harder to conquer than the Benin Kingdom because of its strong autonomy: Kingdoms chose to keep fighting the British even if its neighbors fell. Fallen Benin chiefs like Ologbosere and Ebohon were still resistant to British rule inadvertently guarded Esan soil from the west, by establishing military camps and blocking roads. This lasted from 1897 to April 22. 1899, where Ologbosere surrendered at the border village of Okemue.