Original sentence: Roger spent most of the decade, beginning with his coronation and ending with the Assizes of Ariano, a series of laws with which Roger intended to centralise the government, fending off one invader or other and quelling rebellions by his premier vassals: Grimoald of Bari, Robert of Capua, Ranulf of Alife, Sergius of Naples and others
Edited sentence: Roger spent most of the decade, beginning with his coronation and ending with the Assizes of Ariano, a series of laws with which Roger intended to centralise the government, fending off multiple invasions and quelling rebellions by his premier vassals: Grimoald of Bari, Robert of Capua, Ranulf of Alife, Sergius of Naples and others