Original sentence: He brutally suppressed political dissent and regularly used the military to maintain control over dissident regions of the nation
Edited sentence: He also maintained a strong union of the Indonesian islands, which constituted the most culturally diverse nation in the world, at a time when it was feared that separatist secessionist, Marxist, and Islamist factions would cause instability.However, in doing so, he brutally suppressed political dissent and regularly used the military to maintain control over dissident regions of the nation