In 387, the Kingdom of Armenia was split between the Eastern Roman Empire and the Persian Empire. Western Armenia first became a province of the Roman Empire under the name of Armenia Minor, and later Byzantine Armenia; Eastern Armenia remained a kingdom within Persia until, in 428, the local nobility overthrew the king, and the Sassanids installed a governor in his place, beginning the Marzpanate period over Persian Armenia. Those parts of historical Armenia remained firmly under Persian control until the Muslim conquest of Persia, while the Byzantine parts remained until being conquered, also by invading Arabic armies, in the 7th century. In 885, after years of Roman, Persian, and Arab rule, Armenia regained its independence under the Bagratuni dynasty.