Why did the US end its neutral foreign policy after the American Revolution?

The U.S. ended its neutral foreign policy after the American Revolution primarily due to the need to secure its sovereignty and economic interests. As a young nation, it faced pressures from European powers, particularly Britain and France, which sought to influence or control American affairs. Additionally, increasing trade relationships and the desire for alliances motivated the U.S. to engage more actively in international politics, culminating in decisions like the War of 1812 and forming treaties that reflected a shift toward a more assertive foreign policy.