The 29th, 30th and 31st chapters of the so-called De administrando imperio probably give us the most important and comprehensive narratives about the early history of the Croats. On one hand, the famous work of Emperor Constantine Porphyrogenet provides us, among many defined topics – such as the ethnogenesis of the Croats, their immigration to the Balkans, and their relations to the surrounding nations in the early Middle Ages –, lot of valuable information about the early medieval Croatian state, of its organization, territorial framework, and some aspects of its administation as well.