Original:  The British Government revoked the Royal Niger Company's charter (granted in 1886) as a result of these events and ongoing complaints against the company from the Brass people of the Benin Rivers, the killings of Hausa princes during the Bida Battle ( 1897 ) and ongoing territorial rivalry with the French.
Revised:  The British Government revoked the Royal Niger Company's charter (granted in 1886) as a result of these events and ongoing complaints against the company from the Brass people of the Benin Rivers, the killings of Hausa princes during skirmishes in the Bida Emirate in 1897 ) and ongoing territorial rivalry with the French.
Edit intent: meaning-changed