Trade lines of Panton, Leslie and Company break down and Spain is forced into an unnatural alliance with Great Britain. The Treaty of San Lorenzo. Spain surrenders the Indian territory and claims to exclusive ownership of the Mississippi River. This treaty marks the beginning of the disintegration of the Spanish empire and the beginning of territorial expansion of the United States. Article IV stipulates navigation of the Mississippi river to the Gulf by citizens of the United States.
Article V settles the Indian question.
Article XXII authorizes the right of deposit in the Port of New Orleans for three years. The international boundary for next few years is the Mississippi River and West Florida at 31st parallel. This barrier would also fall, first Louisiana, then West Florida and finally East Florida. In 1794 only 5,400 barrels of flour from the American West passed through the port of New Orleans. By 1802 there will be 12,000 barrels for local consumption and 70,000 barrels deposited for export.