The coordinates 0° N and 80° W are located in the
Atlantic Ocean, specifically in the
northern part of the Amazon River mouth. There is no landmass at that precise location.
To give you a better idea:
* 0° N represents the Equator.
* 80° W is close to the coast of Venezuela and Guyana.
Therefore, no country is directly located at 0° N and 80° W.