US History National Expansion Practice Test

The main idea here is how borders were settled between the United States and Spain. The Adams-Onís Treaty of 1819 resolved long-running border disputes by exchanging Florida for a clearly defined western boundary with Spanish North America. Spain ceded Florida to the United States, and in return the United States gave up its claim to Texas and accepted a defined boundary that extended from the Gulf of Mexico to the Pacific along the agreed line with New Spain. This arrangement helped prevent future frontier clashes and set a stable border for both nations. It did not involve Texas gaining independence, Oregon ownership, or the end of the Mexican-American War (those events occurred in other years).