The analogy I have before suggested of the Norman invasion of England and the Bulgar invasion of Bulgaria generally holds good. The Slavs were a people who tilled the soil, cherished free institutions, fought on foot, were gentle in character. The Bulgars were nomads and pastoralists, obeying despotic chiefs, fighting as cavalry. They came as conquerors, but in time were absorbed in the more stable Slavonic type.
Without a doubt the Bulgars were racially nearly akin to the Turks—first cousins at least. Mingling with the Slavs they adopted their language and many of their customs. But something of the Turk survives to this day in the character of the Bulgarian people. It shows particularly in their treatment of their women. Though the Bulgarian is monogamic he submits his wife to an almost harem discipline. Once married she lives for the family alone. Though she does not wear a veil in the streets it is not customary for her to go out from her home except with her husband, nor to receive company except in his presence, nor to frequent theatres, restaurants, or other places of public amusement. There is thus no social life in Bulgaria in the European sense of the term, and there is great scope there for a campaign for "women's rights."
The Bulgars taking command over the Slav population in Bulgaria began a warfare against the enfeebled Greek Empire. That Empire gave up Moesia to the Bulgarian King, Isperich, and agreed to pay him a tribute, it being the custom of the degenerate descendants of the Roman Empire of the period thus to attempt to buy safety with bribes. The Emperor Justinian II. stopped this tribute, and a war followed, in which the Bulgarians were successful, and Justinian lost his throne and was driven to exile. Later, Justinian made another treaty with the Bulgarians and offered his daughter in marriage to the new Bulgarian King, Tervel, and with Bulgarian help he was restored to his throne. But war between the Bulgars and the Empire was chronic. To quote a Bulgarian chronicler:
The chief characteristics of the Bulgars were warlike virtues, discipline, patriotism, and enthusiasm. The Bulgarian kings brought their victorious armies to the gates of Constantinople, whose very existence they threatened. The Greek Emperor sought their friendship, and even consented to pay them tribute.
Bulgaria attained her greatest empire in the reign of King Kroum. Between King Isperich and King Kroum, however, Bulgaria had many ups and downs. The Bulgarian King, Kormisos, once almost reached the walls of Constantinople. But trouble among his own people prevented his victories being pushed home. Then a series of civil wars in Bulgaria weakened the nation, and a great section of it migrated to Asia Minor. The Roman Emperor, Constantine V., took this occasion to exact a full revenge for previous Bulgar attacks on Constantinople. The Bulgar army was routed, and an invading force carried the torch into every Bulgarian town. A new Bulgar King, Cerig, restored his country's position somewhat by a secretly plotted massacre of all its enemies within its boundaries. The Empress Irene then ascended the Imperial throne at Constantinople and found herself unable to withstand the Bulgar power, and went back to the system of paying tribute to the Bulgarians as the price of safety.
King Kroum next ascended the throne of Bulgaria and, capable and savage warrior as he was, raised its power vastly. He defeated and slew the Greek Emperor, Nicephorus, in battle, and captured Sofia (809), the present capital of Bulgaria. Warfare was savage in those days, and between the Bulgars and the Greek emperors particularly savage. The defeated Imperial army was massacred to a man, from the Emperor down to the foot-soldier. King Kroum afterwards used the skull of the descendant of the Caesars as a drinking-cup.
A siege of Constantinople followed the defeat and death of the Emperor Nicephorus. The Bulgars affrighted the defenders of the city by their fierce orgies before the walls, by the human sacrifices they offered up in their sight, and by the resolute refusal of all quarter in the field. The Empire tried to buy off the Bulgars with the promise of an annual tribute of gold, of cloth, and of young girls. The invaders finally retired with a great booty, and the death of King Kroum soon after relieved the anxiety of Constantinople.
Bulgaria seems now (the ninth century) to have suffered again from internal dissensions. These arose mostly out of religious issues. Many of the Slavs had become Christians, and some of the Bulgars also adopted the new faith. For a time the kings tried to crush out Christianity by persecutions, but in 864 the Bulgarian King, Boris, adopted Christianity—some say converted by his sister, who had been a prisoner of the Greeks and was baptized by them. His adherence to Christianity was announced in a treaty with the Greek Emperor, Michael III. Some of King Boris's subjects kept their affection for paganism and objected to the conversion of their king. Following the customs of the time they were all massacred, and Bulgaria became thus a wholly Christian kingdom.
King Boris, whom the Bulgarians look up to as the actual founder of the Bulgarian nation of to-day, hesitated long as to whether he should attach himself and his nation to the Roman or to the Greek branch of the Christian Church. He made the issue a matter of close bargaining. The Church was sought which was willing to allow to Bulgaria the highest degree of ecclesiastical independence, and which seemed to offer as the price of adhesion the greatest degree of political advantage.