History of St. Louis (1763–1803) History of St. Louis (1763–1803) The history of St. Louis, Missouri from 1763 to 1803 was marked by the transfer of French Louisiana to Spanish control, the founding of the city of St. Louis, its slow growth and role in the American Revolution under the rule of the Spanish, the transfer of the area to American control in the Louisiana Purchase, and its steady growth and prominence since then. In mid-1763, French Governor Jean-Jacques Blaise d'Abbadie granted a trade monopoly over the west upper Mississippi region to Gilbert Antoine de St. Maxent, a New Orleans merchant. Maxent quickly engaged the
France in the American Revolutionary War France and the U.S. was weakened. Thus the influence of France and Spain in future negotiations was limited. The war formally ended in September 1783 with the signing of the Treaty of Paris. France gained (or regained) territories in the Americas, Africa, and India. Losses in the 1763 Treaty of Paris and in the Treaty of Utrecht (1713) were in part regained: Tobago, Saint Lucia, the Senegal River area, as well as increased fishing rights in Terra Nova. Spain regained Florida and Minorca, but Gibraltar remained in the hands of the British. Because the French involvement in the war was