Azerbaijan is 39% larger than West Virginia (USA).
Area: 86,600 km2 World Factbook
Population: 9,686,210 (July 2014) World Factbook
Azerbaijan, officially the Republic of Azerbaijan, is the largest country in the Caucasus region located at the crossroads of Western Asia and Eastern Europe. It is bounded by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west and Iran to the south. Wikipedia
West Virginia (/ˌwɛstvɚˈdʒɪnjə/(helpinfo)) is a state in the Appalachian, Upland South, and Mid-Atlantic regions of the United States, bordered by Virginia on the southeast, Kentucky on the southwest, Ohio on the northwest, and Pennsylvania and Maryland on the northeast. Wikipedia