Croatia, officially the Republic of Croatia, is a country at the crossroads of Central and Southeast Europe on the Adriatic Sea. It borders Slovenia to the northwest, Hungary to the northeast, Serbia to the east, and Bosnia and Herzegovina and Montenegro to the southeast, and it shares a maritime border with Italy. Its capital and largest city, Zagreb, forms one of the country's primary subdivisions, along with twenty counties. Croatia has an area of 56,594 square kilometres (21,851 square miles) and a population of 4.07 million.

West Virginia is a state in the Appalachian region of the Southern United States, though it is also considered part of the Mid-Atlantic Southeast Region. It is bordered by Pennsylvania to the northeast, Maryland to the east and northeast, Virginia to the southeast, Kentucky to the southwest, and Ohio to the northwest. West Virginia is the 41st-largest state by area and ranks 38th in population, with around 1.791 million residents.