Simplify the following text for a Grade 11 native English-speaking person.
Original: During the reign of Sennacherib of Assyria , Babylonia was in a constant state of revolt , led by Mushezib-Marduk , and suppressed only by the complete destruction of the city of Babylon .
Simplified: During the reign of Sennacherib of Assyria , Babylonia was in a constant state of revolt , and was suppressed only by the complete destruction of the city of Babylon .