ENLithuania is a country in north-eastern Europe and the largest of the three Baltic states. It borders Latvia to the north, Belarus to the east and south, Poland and the breakaway Russian region of Kaliningrad to the southwest, and the Baltic Sea to the west. Lithuania declared independence in 1990 and adopted its current Constitution in 1992. Lithuania is a parliamentary republic with a head of government -the prime minister -and a head of state -the president -who appoints the prime minister. The Parliament (Seimas) is a unicameral legislative body. A mixed system elects the 141 members of the Seimas: half are elected in single-member constituencies under a two-round system, and the other half in multi-member constituencies under a proportional representation system. Lithuania joined the European Union and the North Atlantic Treaty Organization in 2004. About 75% of the population is Roman Catholic; there are smaller groups of Evangelical Lutherans, other Protestants, and people of other faiths. Lithuania joined the eurozone in 2015. The main sectors of the Lithuanian economy in 2023 were wholesale and retail trade, transport, hotels and restaurants (29.9%); industry (20.5%); and public administration, defence, education, health, and social work (16.1%) (Statistics Lithuania, 2023) ... [From Introduction].