Passed after the end of the French and Indian War, which of the following increased Georgia’s territory by expanding the colony’s southern border?

The Treaty of Paris 1783 increased Georgia’s territory by expanding the colony’s southern border. This treaty officially ended the American Revolutionary War and established borders for the newly independent United States, which included the expansion of territories such as Georgia. The other options you listed, such as the Sugar Act, Stamp Act, and Proclamation of 1763, do not pertain to the expansion of Georgia's territory.