Simplify the following text for a Grade 4 native English-speaking person.
Original: Born in Peekskill , New York , Gibson moved with his parents to Sydney , Australia when he was 12 years old and later studied acting at the Australian National Institute of Dramatic Art .
Simplified: He was born in Peekskill , New York , United States . His family moved to Australia in 1968 , when he was 12 .