 Thus the centralized government of the Nizaris was disestablished, and Nizaris were either killed or abandoned their traditional strongholds.Many of them migrated to Afghanistan, Badakhshan, and Sindh.Little is known about the history of the Ismailis in this stage, until two centuries later, when they again began to grow as scattered communities under regional "da'i"s in Iran, Afghanistan, Badakhshan, Syria, and India.