Final answer:
The United States acquired Florida from Spain through the Adams-Onís Treaty of 1819. The Louisiana Purchase was another significant acquisition by the United States from France in 1803.
Step-by-step explanation:
The Florida Purchase, also known as the Adams-Onís Treaty of 1819, was an agreement between the United States and Spain. The United States acquired Florida from Spain in exchange for the United States renouncing its claims to Texas. This acquisition was important for the United States as it expanded its territory and secured control over the strategic Gulf of Mexico.
Another territory acquired by the United States was the Louisiana Purchase in 1803. The United States purchased this vast territory from France under the leadership of President Thomas Jefferson. The acquisition of the Louisiana Purchase doubled the size of the United States and provided opportunities for westward expansion, access to important trade routes, and control over the Mississippi River.
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