Final answer:
Option (D), General Anthony Wayne's victory at Fallen Timbers opened new territories for settlement and led to the signing of the Treaty of Greenville, ceding significant land to the United States.
Step-by-step explanation:
In 1794, General Anthony Wayne's defeat of the Indians at Fallen Timbers resulted in the opening of new western territories for settlement. This victory signified a critical turning point in the conflict between Native American tribes and the United States.
Following the battle, the Treaty of Greenville was signed in 1795, which ceded extensive lands in Ohio and parts of present-day Indiana, including strategic future city sites like Detroit, Chicago, and Toledo, to the United States. The treaty effectively pushed the Northwest Confederacy to lands beyond the 'Greenville Treaty Line' and established US dominance over the Ohio territory.