The purpose I pursue with this book is to compare the information that has come down to us from old writers and to draw some conclusions about the people who spread the Bulgarian state to the Balkans, without resorting to the numerous contemporary books that I have read and that fill my library.

I do this not out of disrespect for the tremendous work of contemporary Bulgarian writers and historians, but out of a desire to make an independent assessment of events and to draw my own conclusions about the relationship and sequence of events and their consequences by reading only older authors.

I hope the book will find a place in the library of an educated and unbiased Bulgarian, to serve him as a reference book of information from old authors that have come down to us, about various events in the European history. It can also be a valuable reference for schoolchildren, students, researchers and teachers.