When did great britain surrender the northwest territory?

It was in the year 1763

Explanation:

The British victory in the Seven YearsÂ' War was confirmed in the Treaty of Paris in 1763, in which, among many other things, the French surrendered their claim to the Old Northwest. Later, during the War for Independence, American interests in the area were advanced by the military exploits of George Rogers Clark.

The Treaty of Paris was signed by U.S. and British Representatives on September 3, 1783, ending the War of the American Revolution. ... The 1783 Treaty was one of a series of treaties signed at Paris in 1783 that also established peace between Great Britain and the allied nations of France, Spain, and the Netherlands.

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."

no every country is held to the same degree as others just some member countries such as the usa and germany are more economically sound so the need to show there support to all others