Based on the map, for what reason was control of Savannah of great importance to both the Patriots as well as the British? A. because Savannah was a major port city and controlling it would prevent enemies from receiving supplies B. because the forests around Savannah provided a geographic advantage in battles C. because Savannah was the last remaining stronghold of Great Britain in the colonies D. because traveling through Savannah was the only way to reach the city of Augusta where military supplies were stored