The significance of the signing of the Treaty of Paris in 1783 was that it officially ended the American Revolutionary War and recognized the sovereignty of the thirteen American colonies. Signed on September 3, 1783, the treaty was negotiated between representatives from the United States and Great Britain. It granted the United States substantial territory, extending westward to the Mississippi River, which laid the groundwork for westward expansion. Additionally, the treaty marked the emergence of the United States as an independent nation on the global stage, catalyzing democratic ideals and inspiring future revolutions worldwide, significantly altering the geopolitical landscape of North America.