evidence: Bosnia and Herzegovina is a country in Southeast Europe on the Balkan Peninsula. It has had permanent settlement since the Neolithic Age. By the early historical period it was inhabited by Illyrians and Celts. Christianity arrived in the 1st century, and by the 4th century the area became part of the Western Roman Empire. Germanic tribes invaded soon after, followed by Slavs in the 6th century. [...] Kingdom of Bosnia [edit]Bosnian history from then until the early 14th century was marked by the power struggle between the Šubić and Kotromanić families. This conflict came to an end in 1322, when Stjepan II Kotromanić became ban. By the time of his death in 1353, he had succeeded in annexing territories to the north and west, as well as Zahumlje and parts of Dalmatia. He was succeeded by his nephew Tvrtko who, following a prolonged struggle with nobility and inter-family strife, gained full control of the country in 1367. Under Tvrtko, Bosnia grew in both size and power, finally becoming an independent kingdom in 1377. Following his death in 1391 however, Bosnia fell into a long period of decline. The Ottoman Empire had already started its conquest of Europe and posed a major threat to the Balkans throughout the first half of the 15th century. Finally, after decades of political and social instability, Bosnia officially fell in 1463, while resistance was active and fierce for a few more centuries. Southern regions of Bosnia, nowadays known as "Herzegovina" would follow in 1483, with a Hungarian-backed reinstated "Bosnian Kingdom" being the last to succumb in 1527.