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.