Simplify the following text for a Grade 5 native English-speaking person.
Original: On June 24 â `` 26 , 2005 , Billy Graham began what he has said would be his last North American crusade , three days at the Flushing Meadowsâ `` Corona Park in New York City .
Simplified: On June 24 , 2005 , he began what he said would be his last North American crusade .