Complex sentence: A long and often violent period of "cleansing" the Imperium from Traitors and of rebuilding its institutions takes place following the end of the Heresy, while the majority of surviving Traitor forces flee to a Chaos dominion known as the.
Split into simpler sentences: A long and often violent period of "cleansing" the Imperium from Traitors, and rebuilding its institutions, takes place following the end of the Heresy. The majority of surviving Traitor forces flee to a Chaos dominion known as the.