Answer:
Coastline--both Plymouth and Boston are located in Massachusetts on the coast of the Atlantic Ocean. The coastline of Massachusetts is rocky with sand beaches. The coastline provided by cities with a place to set up port making both cities trading posts for the colony and eventually the state. The coast also provided a vital fishing industry which brought income and food supply to Massachusetts.
it allowed France and Russia to mobilize their militaries faster than Germany had thought possible.
The answer for this question is oil