What colony did the Continental Army take back from the British after crossing the river a final time and
pushing back the British army?

new Jersey

Explanation:

after george washington and his army crossed again it was in order to push back what was left of the british army

workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.