Why did Spain agree to give Florida to the United States?

Spain was worried about losing Texas to the United States.

The United States won Florida as part of the War of 1812.

The United States defeated Spain in battle.

The Adams-Onís Treaty of 1819, also known as the Transcontinental Treaty, the Florida Purchase Treaty, or theFlorida Treaty, was a treaty between the United States and Spainin 1819 that ceded Florida to the U. S. and defined the boundary between the U. S. and New Spain.