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Pinckney's Treaty (Treaty of San Lorenzo) signed with Spain

U.S. Minister Thomas Pinckney and Spanish officials signed the Treaty of San Lorenzo (Pinckney's Treaty) in Madrid, establishing the 31st parallel as the boundary with Spanish Florida and granting American navigation rights on the Mississippi River.

Pinckney's Treaty (Treaty of San Lorenzo) signed with Spain

The treaty secured U.S. access to the Mississippi and the port of New Orleans, resolving a major diplomatic dispute with Spain and opening the West to increased settlement and commerce.

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