Pinckney's Treaty
by Samuel Flagg Bemis
Summary
Samuel Flagg Bemis built Pinckney's Treaty around the 1795 Treaty of San Lorenzo, the agreement that finally secured the young United States free navigation of the Mississippi River and the right to deposit goods at Spanish controlled New Orleans, negotiated by the American envoy Thomas Pinckney at a moment when the new nation had almost no leverage of its own to offer Spain. Bemis, still early in an academic career that would eventually run through Yale, had already written on American diplomacy with Jay's Treaty and brought the same close reading of negotiation and circumstance to this earlier, less famous agreement.
The book's real argument is that America's advantage came not from its own strength but from Europe's distress, as the subtitle states directly: Spain, distracted and weakened by the wars convulsing revolutionary Europe, granted concessions to the United States it would never have offered from a position of confidence. Bemis traces the diplomatic maneuvering behind the treaty in detail, showing how Pinckney and the American negotiators read Spain's European predicament correctly and pressed their advantage at exactly the right moment, securing terms that opened the Mississippi Valley to American settlement and trade for a generation.
Reading the book means following a diplomatic historian at the start of a career built almost entirely on this kind of close, document based negotiation history, work that grew directly out of lectures Bemis delivered on American diplomacy. It suits a reader interested in how a small, unproven country actually won concessions from an established European power, not through force but through reading the larger European chessboard correctly and moving at the right moment.
Historical Context & Significance
Pinckney's Treaty won the 1927 Pulitzer Prize for History, an early recognition for Bemis at the start of a career that would make him one of the twentieth century's leading historians of American diplomacy. The book grew out of the Albert Shaw Lectures on Diplomatic History, and its central argument, that early American diplomatic success depended heavily on Europe's own internal conflicts rather than American strength alone, became a recurring theme across Bemis's later work.
Bemis went on to join Yale University in 1935, remaining there until his 1960 retirement, and served as president of the American Historical Association in 1961. He won a second Pulitzer Prize in 1950, this time for Biography, for the first volume of a two part study of John Quincy Adams, a different book about a different subject decades removed from this early diplomatic history, and continued producing major reference works on American diplomacy, including a multivolume series on the secretaries of state and their diplomacy, well into his later career.