Northwest War (13 Fallen Stars)

The Northwest War was an armed conflict fought between, , and a coalition between and. This was the second conflict to be fought after the dissolution of the (as well as the second war involving New England). The war was primarily fought in what was known as the Northwest Territory, which corresponds to southern, western Pennsylvania, and northwestern Virginia.

Due in great part to the war taking place in uncharted and uncolonized territory, the war continued for two years and ended with the Treaty of New York, which agreed to peacefully divide the territory between the three combatants.

Virginia received all the territory south of the. Pennsylvania was granted all the territory west of the (about the westernmost tip of ). The remainder of the territory within the watershed of the was granted to New England, but was placed under joint administration with Great Britain.