What common physical feature do plymouth and boston

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.

there were 6 major base camps.   the base camps were located in alva, fort reno, fort sill, the madill provisional internment camp headquarters, mcalester and camp gruber.