The rule of Trpimir was big step for establishing indipendent Croatian state in Medieval Age. His military power was confirm by victories against Byzantians and great victory against Bulgarians. He was a strong statesman and warrior, he were inclided for cultural acting. He is concerned for who were establisht national dynasty called by him: Trpimirović. Croatians people were dwelt in South panonia, Dalmatia and area around Neretva River. In this all this area were eventualy created a couple states such as Downpanonian's Principality, Dalmatia and Neretva's Principality. Sometimes, they were got in the war agains eachother, such as Ljudevit Posavian and Borna from Dalmatia. The war was preceded by dissatifaction agains goverment. In the year of 818 Ljudevit decides to take a rebellion against it.. In the summer of 819 Ljudevit was defeated in Carantania. Rebellion was suffocated in 822 when Ludevit was killed by Ljudemisl. In establish of Dalmatian's Principality huge factor was christianization of their rulers and polulation. Borders of first Dalmatian prince wasn't clearly known to nowdays. About his duty in Borna's period is also unknown. Downpanonian's Principality was called the territory between Drava and Sava, which center was in Sisak and also the territory between Drava and Balaton Lake which center was in Balaton City. The territory between Neretva and Cetina were inhabited by diffrent Slavic tribes. Despite the fact that this was relatively small country, this Slavic tribes were succesed in inestablishing their own rule. Neretva's populations were truly masters for the Adriatic Sea, especially for middle area of it. When Trpimir became the Prince, his own family was settled on Croatian throne for almost two century. He was under rule of Frackish Emperior and Italian King Lotar. Trpimir's main center was a fort Klis because it had the best directions with coast and the enterior of the area. Previous Princes were going to the war mostly under the rule of Franckian Emperior, but now he was able to go under the his own. He had to go to the war againt Byzantian governor in Dalmatia, which is ended succsesfully for him. Sojurn of Gottschalk on Trpimir's rulling courtyards when his was the most wanted man in Europe is indicator for Trpimir's strong rule in his Principality. At the end of his rule, he was intenred in war agains Bulgarian Prince Boris. Maybe is because their both have their interests for north Bosnia, or maybe is because the Bulgarian Prince was defeated early against the King of East Francks. Trpimir was victorius and at the end they have both signed peace. Once for a lifetime his had visit Čedad. It was the center of Akvilea's Patriarchate. On the manuscript made up here, we can find out that their were called him domno Trpimero. Trpimir has continued good relations with Split, which was started with Mislav. He donated it the land to their Bishop in vicinity of Klis. Christianity has spread all over the interior from Dalmatia because in Dalmatia it was never died. Best source for reveal the relationship between Prince and Church is in his Grants. From the verified source we know that his had endowed the Nin's Bishop by given him a land for new church of Saint George. Proof for thuthfulness of the text, that it is from 9th century is in content analysis and names of the slaves in Mosor, which either wasn't christian's. In coastal area cities were lived in antique style. because their city life was never interapted by barbarians. This is the main reason why we can stil in 9th century find that some of the importent people still have the slaves. The answers for question like how were Croatian's peasant became the slaves is unknown still to us. Croatian's rulers like Trpimir and rulers before him, were usualy donated the work force to Bishops and these people are usuly became a slaves. After his death, Trpimir left his family on the throne for almost two century. He had two sons: Zdeslav and Mutimir. Neither of them has settled on the throne, his inheritor was Domagoj. Every rebellion against his rule he has suffocate in blood. He has wars with Venetia, Saracens and Byzantian Empire. Domagoj left several sons behind him, but no one of them has inherited him. His inheritod was Zdeslav, one of the Trpimir's sons. At that time Byzantian influence was very strong, also Zdeslav had some help to come back to Croatia by Byzantian Emperior. Because all of this things he wasn't very popular as Prince. After only a year of his rule, he was killed by Branimir, who has inherited him after that. Reasons for his act were several; Zdeslav was under influence of the Byzantian Emperior and he had turned the back of the Pope. Branimir was not from Trpimirović family. For his merities to Church, in year of 879 Pope has blassed him and all his people. In the Medieval style that was recognition of independence. Branimir didn't left any of his sons, so he was inherited bay Trpimir's another son Mutimir. By his arrival his family was finally settled on Croatian throne until death of King Zvonimir in 1089.