The treaty that officially ended the Revolutionary War was the Treaty of Paris, signed on September 3, 1783. This treaty recognized the sovereignty of the United States and established boundaries for the new nation. The agreement was crucial for securing American independence from British rule, as it confirmed the territorial gains achieved during the conflict. Negotiated by key figures such as Benjamin Franklin, John Jay, and John Adams, the treaty laid the groundwork for future diplomatic relations and territorial expansion, reinforcing the ideals of liberty and self-governance that fueled the Revolution.