Sometime in the 970s—the exact date is unclear and disputed—the brothers launched a successful rebellion against the Byzantine Empire, that had recently subdued Bulgaria; after the early death of his brothers, Samuel remained as the undisputed leader of Bulgaria, ruling as Tsar from 996 until his death in 1014.
Around the 1970s—the exact date is uncertain and contested—the brothers rebelled against the Byzantine Empire, which had recently subjugated Bulgaria; after the early demise of his brothers, Samuel remained as the sole ruler of Bulgaria, ruling as Tsar from 996 until his death in 1014.