This is a history of a space – a space between the Panonian plain in the East and the most northernmost bay in the Adriatic in the West, from the eastern Alps in the North and the Dinaridic mountain area in the South. It is also a history of all the different people who lived in this area. The authors show that the Slavs did not settle an empty space and simply replace the Celto-Roman inhabitants of earlier times; they are, on the contrary, presented as the result of reciprocal acculturation. The authors show that the Slovenes made more than two important appearances throughout the entire feudal era; the same holds for later periods, especially for the twentieth century. This book offers a concise and complete history of an area that finally became an integral part of Central Europe and the Balkans.