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
Enlightenment in Spain Menorca and Trinidad were occupied. In 1800, the Spanish returned Louisiana to France, which had been given to them in compensation for their losses at the end of the Seven Years' War. The Portuguese, who opposed the French, continued to trade with the British in spite of a series of French demands that they close their ports to British ships. In 1801, the Spanish delivered an ultimatum on behalf of France, and in the following border war, occupied the town of Olivenza (Olivença) before the Portuguese agreed to the Spanish and French demands. The town – which is disputed to