Treaty negotiations began on November 28, 1845, with Polk meeting with the representatives of King Ferdinand II: Don Giustino Fortunato, Don Michele Gravina, and Don Antonio Spinelli. An agreement was reached after three days, and a copy of the proposed treaty was transmitted to Washington on December 1. While the treaty wasn't as favorable as the U.S. had hoped, it did outline rules regarding duties on tonnage and purchase imports, and rights regarding navigation, shipwrecks, movement of citizens, and asylum. The treaty was ratified in April 1846. It remained in effect until a new treaty was negotiated by the Pierce Administration in 1855.