The Bucharest – Ilfov region encompasses the capital, Bucharest, as well as the surrounding Ilfov County. The Bucharest-Ilfov region is the most developed in the country and is responsible for 25% of the total national economy and has the largest share in Romania's exports. Most large companies have their HQ in this region as it is largest industrial cluster in Romania. Trade, warehousing, distribution, administration - every important part of business is present here which allows the region to distance itself on a level of development from the other regions, despite the unfavorable geographical position. With the country's most important national and international road-rail-air transport hub, it is characterized by a high degree of accessibility. From the surface point of view, it is the smallest region, but it is the most developed from the demographic, urban and economic point of view.