The US acquired the territory of Florida from Spain ceding it to the US.
what borders did the United States gain when it acquired this territory in 1776
Oregon
No, the last territory acquired by the United States was not the Oregon Territory. The Oregon Territory was acquired in 1846 through a treaty with Great Britain. The final addition to U.S. territory was the purchase of Alaska from Russia in 1867.
in 1846, Britain agreed for the US to take control of this territory.
Hawaii
The Louisiana Territory which is most often called the Louisiana Purchase.
The Philippines.
Mexico
Often as the result of armed conflict.
Guam remains a US Territory acquired in the Spanish American War.
Great Britain