How did the Adams-Onis Treaty
treat the status of Texas?

After the Louisiana Purchase in 1803, Pres. Thomas Jefferson argued that Florida was included in Louisiana. In 1810 and 1812 the United States annexed sections of West Florida. When John Quincy Adams became secretary of state in 1817, he sought additional territory. In 1817 and 1818 Adams and President James Monroe resumed efforts to acquire Florida and a western boundary for the Louisiana Purchase. After months of negotiations, the Adams-Onís Treaty was signed on February 22, 1819. In the treaty Spain gave East and West Florida to the United States, and the United States agreed to assume claims by citizens of the United States against Spain. In Article III the treaty stated that: "The boundary line between the two countries . . . shall begin on the Gulph [sic] of Mexico, at the mouth of the river Sabine, in the sea, continuing north, along the western bank of that river, to the 32d degree of latitude; thence, by a line due north, to the degree of latitude where it strikes the Rio Roxo of Natchitoches, or Red River; then following the course of Rio Roxo westward, to the degree of longitude 100 west . . . , then, crossing the said Red River, and running thence, by a line due north, to the river Arkansas; thence following the course of the southern bank of the Arkansas, to its source, in latitude 42 north; and thence, by that parallel of latitude, to the South Sea." In addition, the treaty stated that "all islands in the Sabine, . . . Red and Arkansas Rivers . . . [were] to belong to the United States.