The "Mokrani Revolt", which broke out on 16 March 1871, was the most important local uprising against French colonial power in Algeria since the conquest in 1830 : more than 250 tribes rose up, around a third of the population of the country. It was led by the Kabyles of the Biban mountains commanded by Cheikh Mokrani and his brother , as well as , head of the Rahmaniyya religious fraternity.