Synonyms for Occurred:
v.
•existed (verb)Subsisted, Lasted, Prevailed, Endured, Existed, continued, abided, Was, had been, Lived.
•happened (verb)
took place, came to pass, Passed, taken place.
•occurred (verb)
Followed, Befallen, Eventuated, Arisen, Befell, developed, Happened, Arose, Transpired, Ensued.