Which battle was the turning point that established U.S. control in the Northwest Territory?

The Battle of Fallen Timbers, fought in 1794, is recognized as the pivotal conflict that secured U.S. control over the Northwest Territory. This battle was significant because it marked the decisive victory for American forces led by General Anthony Wayne against a confederation of Native American tribes supported by British forces. Following this battle, the United States was able to negotiate the Treaty of Greenville in 1795, which resulted in the cession of vast tracts of land in the Northwest Territory to the U.S. and established a degree of peace in the region, allowing for further American expansion and settlement. This victory played a crucial role in asserting American dominance and influence in what is now the Midwest, fundamentally shaping the future of U.S. territory and Native American relations.