The Atlantic Ocean was the geographic feature that formed the eastern boundary of the 13 colonies. The Atlantic Ocean proved to be very important to the colonists. For those colonists living in New England, the Atlantic Ocean provided very fertile fishing areas. As a result, one of the main jobs of the New England colonists was fishing. Since the ports and harbors were very good, there was a lot of trade that occurred. Trade was very important to colonists. They depended on providing England with products as well as receiving various products from England. This also created jobs for many colonists. Some people built ships so products could be traded. Being located along the coast provided some very significant advantages for the colonies. The Atlantic Ocean was a very important geographic feature.