Mississippi River
The Mississippi River was the western border in 1787.
It was the Land Act of 1800.
Cambodia is on the Vietnam western border.
Indiana begins at the western border of Ohio. Ohio is the western border is Pennsylvania
TO make sure they didnt have a dog
The Mississippi River. in 1783 Spain still had control of everything west or south of the Mississippi river including Florida and the Gulf of Mexico.
The Mississippi River was the western border in 1787.
Alaska?
The Mississippi river
Pacific
Pacific
Pacific Ocean
The Mississippi River
Yukon Territory
the state of Texas
The Pacific Ocean
The Pacific Ocean.