Bulgaria is in southeastern Europe. A Soviet satellite during the Cold War, Bulgaria began its transition from Communism to a free market economy in 1990 and became a member of the European Union in 2007, although it is still working towards joining the eurozone. Bulgaria’s economy produces both resources and finished products for export. Oil and petroleum products are its leading exports, along with metals, particularly refined and unrefined copper. It also has deposits of coal, lead, zinc and bauxite. The industrial sector produces electrical equipment and machinery, auto parts, and pharmaceuticals. Bulgaria’s strategic location allows it to trade with many countries, and it has developed its infrastructure accordingly. The Bulgarian port of Burgas, on the Black Sea, is the center of a free economic zone which allows rapid movement of goods to southeastern Europe, Turkey, Ukraine and Russia via water, air, rail and road.