The historical document that formalized the end of the American Revolutionary War is the Treaty of Paris, signed in 1783. This treaty recognized the independence of the thirteen American colonies and established new boundaries for the United States, extending westward to the Mississippi River. The document marked the culmination of years of struggle against British rule and affirmed American sovereignty. It not only laid the groundwork for the future nation but also had implications for international relations, influencing other struggles for independence across the globe and solidifying the United States' place in world affairs.