The Treaty of Mortefontaine, also known as the Convention of 1800, was signed on September 30, 1800, by the United States and France. The convention confirmed the principle of ‘free trade, free goods’ between the two countries and ended the 1798–1800 Quasi-War. However, it failed to address the issue of compensation demanded by American ship owners for losses suffered before and during the Quasi-War, and as a result was not approved by Congress until December 1801. By removing areas of friction between the two countries, it re-established Franco-American relations, and ultimately facilitated the 1803 Louisiana Purchase.