History of Slovenia: In a referendum, 88.5% of Slovenia's overall electorate vote for independence from Yugoslavia.

The history of Slovenia chronicles the period of the Slovenian territory from the 5th century BC to the present. In the Early Bronze Age, Proto-Illyrian tribes settled an area stretching from present-day Albania to the city of Trieste. The Slovenian territory was part of the Roman Empire, and it was devastated by the Migration Period's incursions during late Antiquity and the Early Middle Ages. The main route from the Pannonian plain to Italy ran through present-day Slovenia. Alpine Slavs, ancestors of modern-day Slovenians, settled the area in the late 6th Century AD. The Holy Roman Empire controlled the land for nearly 1,000 years. Between the mid-14th century through 1918 most of Slovenia was under Habsburg rule. In 1918, most Slovene territory became part of the Kingdom of Serbs, Croats, and Slovenes, and in 1929 the Drava Banovina was created within the Kingdom of Yugoslavia with its capital in Ljubljana, corresponding to Slovenian-majority territories within the state. The Socialist Republic of Slovenia was created in 1945 as part of federal Yugoslavia. Slovenia gained its independence from Yugoslavia in June 1991, and today it is a member of the European Union and NATO.

An independence referendum was held in the Republic of Slovenia on 23 December 1990. Both the ruling center-right coalition and the left-wing opposition supported the referendum and called on voters to support Slovenian independence.

Slovenia, officially the Republic of Slovenia, is a country in Central Europe. It borders Italy to the west, Austria to the north, Hungary to the northeast, Croatia to the south and southeast, and a short coastline within the Adriatic Sea to the southwest, which is part of the Mediterranean Sea. Slovenia is mostly mountainous and forested, covers 20,271 square kilometres (7,827 sq mi), and has a population of approximately 2.1 million people. Slovene is the official language. Slovenia has a predominantly temperate continental climate, with the exception of the Slovene Littoral and the Julian Alps. Ljubljana, the capital and largest city of Slovenia, is geographically situated near the centre of the country. Other larger urban centers are Maribor, Ptuj, Kranj, Celje, and Koper.