One of the smallest countries in Europe; Slovenia is a coastal Alpine country in southern Central Europe bordering Italy to the west, the Adriatic Sea to the southwest, Croatia to the south and east, Hungary to the northeast, and Austria to the north.
In 1848 a strong programme for a united Slovenia emerged as part of the "Spring of Nations" movement within Austria. With the collapse of the Austro - Hungarian monarchy in 1918, Slovenians initially formed part of the State of Slovenes, Croats and Serbs, which shortly joined the Kingdom of Serbs, Croats and Slovenes, later renamed (1929) the Kingdom of Yugoslavia.
Following the re-establishment of Yugoslavia at the end of World War II, Slovenia became a part of the Socialist Federal Republic of Yugoslavia, officially declared on 29 November 1945. Present-day Slovenia was formed on 25 June 1991 upon its independence from Yugoslavia. Slovenia joined NATO on 29 March 2004 and the European Union on 1 May 2004.