I believe a majority of major battles happened in these places because the British had control of them at some point. New York also served as the British base of operations so they probably wanted to break Britain's hold on these cities.
A fleet of warships called is called also naval fleet
Push pull factors I’m pretty sure
Originally, it was all Christian groups (Protestant, Catholic, etc) that had religious freedom in colonial Pennsylvania, although later it was open to all religions of any faith.