did texas gain or lose territory as a result of the adams-onis treaty
Adams–Onís Treaty The Treaty closed the first era of United States expansion by providing for the cession of East Florida under Article 2; the abandonment of the controversy over West Florida under Article 2 (a portion of which had been seized by the United States); and the definition of a boundary with the Spanish province of Mexico, that clearly made Spanish Texas a part of Mexico, under Article 3, thus ending much of the vagueness in the boundary of the Louisiana Purchase. Spain also ceded to the U.S. its claims to the Oregon Country, under Article 3.
Texas annexation The Anglo-American immigrants residing in newly-independent Texas overwhelmingly desired immediate annexation by the United States.[39] But, despite his strong support for Texas independence from Mexico,[40] then-President Andrew Jackson delayed recognizing the new republic until the last day of his presidency to avoid raising the issue during the 1836 general election.[41][42] Jackson's political caution was informed by northern concerns that Texas could potentially form several new slave states and undermine the North-South balance in Congress.[43]