Simplify the following text for a Grade 10 native English-speaking person.
Original: As a consequence of his outspoken support for Sadat 's Camp David peace treaty with Israel in 1978 , his books were banned in many Arab countries until after he won the Nobel Prize .
Simplified: Because of his outspoken support for Sadat 's Camp David peace treaty with Israel , his books were banned in many Arab countries until after he won the Nobel prize .