Prior to the French and Indian War, the American Colonists wanted to extend their territory to the west of the Appalachian Mountains, in what is now the Midwest.
The British Crown opposed this because they did not want to have conflicts with the Native Americans in these lands, and with the French.
In the end, the conflict became impossible to avoid, and the British won, and the land was granted to the Empire.
The Brest-Litovsk peach agreement was signed by Soviet Russia and the Central Powers. It stated Russia's participation in World War II had ended and that the nation had no further intention of fighting.