Lithuania, officially the Republic of Lithuania, is a country in Northern Europe, the largest of the three Baltic states. It is situated along the southeastern shore of the Baltic Sea, to the east of Sweden and Denmark. It borders Latvia to the north, Belarus to the east and south, Poland to the south, and Kaliningrad Oblast to the southwest. Lithuania has an estimated population of 3 million as of 2013, and its capital and largest city is Vilnius. Lithuanians are a Baltic people. The official language, Lithuanian, and Latvian are the only two living languages in the Baltic branch of the Indo-European language family.
For centuries, the southeastern shore of the Baltic Sea was inhabited by various Baltic tribes. In the 1230s, the Lithuanian lands were united by Mindaugas, the King of Lithuania, and the first unified Lithuanian state, the Kingdom of Lithuania, was created on 6 July 1253. During the 14th century, the Grand Duchy of Lithuania was the largest country in Europe; present-day Lithuania, Belarus, Ukraine, and parts of Poland and Russia were the territories of the Grand Duchy.