The correct answer is B) Great Britain's defeat in the American Revolution.
The land included in the Northwest Territories was ceded to the United States following Great Britain's defeat in the American Revolution.
We are talking about the Treaty of Paris of 1783, the agreement between the American colonies and Great Britain to officially end the Revolutionary War. By signing the treaty, Great Britain recognized the Independence of the 13 American colonies. It also clearly defined the Northwest territory for the US. The new territories included Illinois, Minnesota, Indiana, Wisconsin, and Ohio. Authorized the navigation of the Mississippi River. And authorized American ships to fish in the Grand Banks.
