Final answer:
The Proclamation of 1763 moved Georgia's southern boundary to the Altamaha River, reflecting the British effort to manage colonial expansion and minimize conflict with Native American tribes.
Step-by-step explanation:
The Proclamation of 1763 moved Georgia's southern boundary to the b. Altamaha River. This was in the context of the British efforts to stabilize relations with Native American tribes and existing European settlements following the end of the Seven Years' War (also known as the French and Indian War in North America). This proclamation restricted the westward expansion of settlers and created a boundary line along the Appalachian Mountains, which the British hoped would reduce conflicts between settlers and indigenous communities. Moreover, the Charter of the Georgia Colony originally defined its territory to be between the Savannah and Altamaha rivers, suggesting that these were the initially intended boundaries of the colony before the proclamation.