Mississippi River.
da misss'ippi riivuh yo.
the Mississippi River
The eastern boundary was the Mississippi River, while the western boundary was the original 13 colonies along the Atlantic coast.
1783
Hawi
The Treaty of Paris in 1783 officially established the eastern boundary of the United States along the Atlantic Ocean after the end of the American Revolutionary War. The Adams-Onís Treaty of 1819 between the US and Spain further solidified the western boundary by ceding Florida to the US and setting the boundary with New Spain.
The Mississippi River formed the western boundary.
the Mississippi River.
i am not so sure about 1783, but i am sure that the river that became the western boundary of the united states as the result of the revoltionary war is the MISSISSIPPI RIVER.
The Mississippi River
proclamation 1763