Complex sentence: The 1965 election in the region later produced violent protests, rioting and violence were soon synchronous with what was perceived as inordinate political encroachment and an over-exuberant election outcome for Awolowo's western opponents.
Split into simpler sentences: The 1965 election in the region later produced violent protests. Rioting and violence were soon synchronous with what was perceived as inordinate political encroachment and an over-exuberant election outcome for Awolowo's western opponents.