Simplify the following text for a Grade 11 native English-speaking person.
Original: He later moved to Holland , and then to the new-born United States , where he stayed for three years in Boston , New York , Philadelphia and Hartford , living on the proceeds of giving French language and violin lessons .
Simplified: He later moved to Holland , and then to the new-born United States , where he stayed for three years in Boston , New York , Philadelphia and Hartford , living on the proceeds of giving French and violin lessons .