The Northwest Territory of the River Ohio existed at law between 13 July 1787 and 1 March 1803. The southeastern portion of the territory was admitted to the Union as the State of Ohio, 1 March 1803.
Vermont was established from the colonial grants of the Province of New York and the New Hampshire Grants 4 March 1791; Kentucky was formed from Kentucky County, Virginia 1 June 1792, and Tennessee was formed from land donated to the U.S. Government by North Carolina, 1 June 1796, all prior to 1 March 1803; however, none of these had previously been an organized incorporated Territory of the United States.
Therefore, Ohio was the first U.S. State to arise from an organized incorporated Territory of the United States.
No U.S. States, once constituted as States, have departed from that status at law (the Civil-War-era Confederacy was, of course, illegal). The Vermont Republic had never been recognized de jure by the Continental Congress.
Oregon
The Louisiana Territory which is most often called the Louisiana Purchase.
The Philippines.
The Soverign American Embassy Territory of the US in Tehran, Iran was siezed, and occupied by Iran and Iranian militants on 4 Novemer 1969.
louisiana territory
Hawaii
The US acquired the territory of Florida from Spain ceding it to the US.
William Mckinley
Puerto Rice
what borders did the United States gain when it acquired this territory in 1776
Oregon
Louisiana purchase
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.
William McKinley.
Hawaii