The Atlantic Ocean.
Atlantic Ocean
The Atlantic Ocean defines the United States' eastern border.
The eastern border of the US was and is the Atlantic Ocean.
Atlantic Ocean
The Atlantic Ocean is on the eastern border of Brazil. It is the second-largest ocean on Earth and separates Brazil from Africa and Europe.
The Atlantic Ocean forms the eastern and southern border of New England.
Eastern Border
Georgia's eastern border is the Atlantic Ocean
Atlantic Ocean
It is the Indian Ocean
Yes; the eastern border of Tanzania is formed by the Indian Ocean.
Indian ocean