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.

Zachlumia or Zachumlia, also Hum, was a medieval principality located in the modern-day regions of Herzegovina and southern Dalmatia. In some periods it was a fully independent or semi-independent South Slavic principality. It maintained relations with various foreign and neighbouring powers and later was subjected to Kingdom of Hungary, Kingdom of Serbia, Kingdom of Bosnia, and at the end to the Ottoman Empire.