of the U.S. with the Spanish colonies of East Florida and West Florida, with Spain relinquishing its claim on the portion of West Florida north of the 31st parallel; and established the western U.S. border as being along the Mississippi River from the northern U.S. to the 31st parallel. Perhaps most importantly, Pinckney's Treaty granted both Spanish and American ships unrestricted navigation rights along the entire Mississippi River, as well as duty-free transport for American ships through the Spanish port of New Orleans, opening much of the Ohio River basin for settlement and trade. Agricultural produce could now flow on flatboats down the Ohio River to the Mississippi and on to New Orleans. From there the goods could be shipped around the world. Spain and the United States further agreed to protect the vessels of the other party anywhere within their jurisdictions and to not detain or embargo the other's citizens or vessels. The final treaty also voided Spanish guarantees of military support that colonial officials had made to Native Americans in the disputed regions, greatly weakening those communities' ability to resist encroachment upon their lands. The treaty represented a major victory for the Washington administration and placated many of the critics of the Jay Treaty. It also enabled and encouraged American settlers to continue their movement west, by making the frontier areas more attractive and lucrative. The region that Spain relinquished its claim to through the treaty was organized by Congress as the Mississippi Territory on April 7, 1798. Presidential residences and tours Residences Washington's wife Martha managed the presidential household in the federal capital, in addition to supervising affairs at Mount Vernon. Often referred to as "lady Washington" (the term "First Lady" did not come into common use until the mid-19th century), she also organized weekly public salons, where she met with visiting dignitaries, members of Congress, and citizens from the local community. These receptions made Martha, as Abigail Adams wrote, "the object of Veneration and Respect." Martha coordinated weekly levees for the president as well. Designed to give the public access to the president and to project a dignified public image of the presidency, these receptions also elicited criticism. Opposition newspapers derided them as monarchical and wasteful. Nonetheless, the gatherings became a fixture in the capital's social scene, and continued throughout Washington's presidency. Washington and his household lived in three executive mansions during his presidency: Tours Washington