What country is located directly north of the United States?

Canada is the country located directly north of the United States. It shares the longest international land border in the world with the U.S., stretching over 5,525 miles. This border includes various terrains such as forests, lakes, and mountains, marking a significant geographical and cultural boundary.

Other countries mentioned in the options are located at significant distances. Mexico is to the south of the United States, sharing a neighboring border. France is across the Atlantic Ocean and not adjacent to the U.S. Russia, while it has a direct line of sight to the Alaskan islands, is separated by the Bering Strait, making it far from the northern border of the contiguous United States. Hence, Canada is the only accurate answer to the question regarding proximity.