The Republic of Lithuania (Lithuanian: Lietuvos Respublika) is a country in northern Europe.[1] Situated along the south-eastern shore of the Baltic Sea, sharing borders with Latvia to the north, Belarus to the southeast, Poland, and the Russian exclave of the Kaliningrad Oblast to the southwest. Lithuania is a member of NATO and of the European Union. The population is 3.4 million, the largest city and the capital is Vilnius. During the 1300s, Lithuania was the largest country in Europe, as present day Belarus, Ukraine, and parts of Poland and Russia were territories of the Grand Duchy of Lithuania. With the Lublin Union of 1569 Poland and Lithuania formed a new state: the Republic of Both Nations, which was finally destroyed by it's neighbouring countries, back in 1795. Most of Lithuania's territory was annexed to Russian Empire, until the Act of Independence was signed on February 16, 1918, which declared re-establishment of sovereign state. Between 1940 and 1945 Lithuania was occupied by several powers - Soviet Union, Nazi Germany. When World War II was near its end in 1944 and the Nazis retreated, Lithuania would again be merged into the Soviet Union. On March 11, 1990, Lithuania became the first Soviet republic to declare its renewed independence. Present day Lithuania's has one of the fastest growing economies in the European Union. Lithuania became a full member of the Schengen Agreement on 21 December 2007.