Answer:
Atlantic Ocean; Europe or Africa
Explanation:
The Atlantic ocean is the second largest ocean in the world after the Pacific ocean. It lies between the American continents and Africa and Europe.
Now the Atlantic ocean lies to the east of United States of America. If a person sails from the United States of America by ship he or she would have to cross Atlantic Ocean.
And after crossing Atlantic ocean, the person will reach either Africa or Europe because both lies to the east of North America.
Therefore the answer is --
Atlantic Ocean; Europe or Africa
