In July 1997 Britain ended its control of the dependent territory of Hong Kong.
The US gained control of the Utah Territory based on the treaty with Mexico that ended the Mexican War
The Treaty of Paris which ended the American Revolutionary War included provisions that ceded this territory from Britain.
Free Territory ended in 1921.
Territory of Papua ended in 1949.
Tanganyika Territory ended in 1961.
Jefferson Territory ended in 1861.
the american might have ended up being part of great britain
In 1763, Spain ceded Florida to Great Britain as part of the Treaty of Paris, which ended the Seven Years' War. However, Spain regained control of Florida in 1783 after the American Revolutionary War through another treaty. Therefore, while Britain claimed Florida in 1763, it was originally a Spanish territory before that time.
In 1848, the United States acquired the Oregon Territory from Great Britain through the Oregon Treaty. This peaceful resolution established the 49th parallel as the boundary between U.S. and British territories in the Pacific Northwest. The agreement ended a long-standing dispute over the region, allowing the U.S. to expand its territory without conflict.
Ended a string of defeats and turned the French and Indian War in Britain's Favor.
William Pitt's assumption of control of britisg govt. and strategy