Simplify the following text for a Grade 8 native English-speaking person.
Original: The catastrophe separates Late Cypriot II ( LCII ) from the LCIII period , with the sacking and burning of the sites of Enkomi , Kition , and Sinda , may have occurred twice , before being abandoned .
Simplified: The sacking and burning of the sites of Enkomi , Kition , and Sinda may have happened twice , before they were abandoned .