Louis the Pious

Relationship Frankish Empire and the Slavs in the pious Louis developed in three directions: first - the subjection of the Frankish State have independent Slavic tribes, and second - feudalization those Slavs who had already admitted on a power francs, and thirdly - Christianization of the Slavic lands. Among the major Slavic peoples, with whom the Franks were the case, were Croats, karantantsy, obodrity and Serbs, as well as the ancestors of the modern Bulgarians.

Attempts by the subordination of the land of Croats resulted in 819 - 822 years to widespread rebellion against the franc, which was headed by Prince Lyudevit Posavsky. Having concluded an alliance with other Slavic tribes Lyudevit refused to accept a power over the emperor. In response, the Franks carried out in 819 year trip in a subordinate Lyudevitu Pannonskuyu Croatia, but were unable to cause him significant military damage. This prompted Louis to conclude an alliance with another Croatian prince, Born in the fight against Lyudevit which suffered considerable losses. During the next trip (in the 820 and 821 years) Franks had destroyed all the area Lyudevita, forcing him to move to defense. They are also able to re-establish control over the allies Lyudevita karnioltsami and karantantsami. As a result of these successes francs Lyudevit Posavsky was forced to flee their possessions, and soon died. The uprising was suppressed.

In the 817 year margrave of Friuli Kadolag control over the Slavs Karantanii francs. In the year 828, after the suppression of the revolt Lyudevita Posavskogo Emperor Louis has decided to eliminate dependent francs Slavic principality Karantaniya and several other smaller Slavic holdings. Local chiefs were deprived of power, principality were abolished and in their place are formed by 3 Frankish Brands: Oriental brand, brand Karantanskaya (later Duchy of Carinthia) and Kraynskaya mark.

From francs at most of the government of Louis pious were allied relations, only overshadowed by the rebellion in 817, when Prince obodritov Slawomir concluded an alliance with the enemies of francs danami, but the next year obodrity once again become allies francs. Recognizing the authority and influence of Louis, 823 in the year they asked him to resolve the dispute of power between the princes and the emperor had decided the dispute in favor of Prince Tsedraga.

In 827 - 830 of the Franks waged war against the Bulgarians. Even in the year 818 to the ambassadors of Louis arrived Slavic tribes abodritov (eastern branch obodritov) goduskan and timochan recently rebelled against the Bulgarians, with the request for sponsorship, which the emperor consented. Bulgarian khan Omurtag, wishing to regain control over these peoples, in the year 825 led negotiations with Louis, but they have no effect. As a result, 827 and 829 of the Bulgarian Slavs made trips to the Middle Podunavya and established its authority over them. In the year 830 between the Franks and Bulgarians was world on terms the status quo, however, after the death of Khan Omurtag and the subsequent weakening of Bulgaria, at 838 francs was able to regain power over the Slavs Pannonia.