Which was a result of the adams-onís treaty? spain gave up control of california, which quickly joined the union. the texas border dispute between the united states and spain was settled. great britain gave up control of california, which quickly joined the union. the oregon border dispute between the united states and britain was settled.

The correct answer is:

The Texas border dispute between the United States and Spain was settled.  

The Adams–Onís Treaty (1819) ceded Florida to the U.S. in exchange for settling the boundary dispute along the Sabine River in Spanish Texas.

It set the limit through the Rocky Mountains and west to the Pacific Ocean. The U.S. had to pay $5,000,000 and abandon claims over Spanish Texas.  

a. by accepting the election of president abraham lincoln in 1860 and convincing other southern states to do the same