How did the geography of New England influence the development of its economy

Unlike now, people couldn't just take any environment and turn it into a place for travel if a few days to weeks. Travel through a tough mountain range would be extremely difficult compared to a nice flat lands. Trade was essential for the new england colonies due to the them being away from the mainland. New england had to have good trade with the middle colonies and southern colonies and depended on geography good for travel with goods to and from market places.