The Kingdom of Croatia (Modern ; ), and since 1060 known as Kingdom of Croatia and Dalmatia (), was a medieval kingdom in Southern Europe comprising most of what is today Croatia (without western Istria, some Dalmatian coastal cities, and the part of Dalmatia south of the Neretva River), as well as most of the modern-day Bosnia and Herzegovina. The Croatian Kingdom was ruled for part of its existence by ethnic dynasties, and the Kingdom existed as a sovereign state for nearly two centuries. Its existence was characterized by various conflicts and periods of peace or alliance with the Bulgarians, Byzantines, Hungarians, and competition with Venice for control over the eastern Adriatic coast. The goal of promoting the Croatian language in the religious service was initially introduced by the 10th century bishop Gregory of Nin, which resulted in a conflict with the Pope, later to be put down by him. In the second half of the 11th century Croatia managed to secure most coastal cities of Dalmatia with the collapse of Byzantine control over them. During this time the kingdom reached its peak under the rule of kings Peter Krešimir IV (1058–1074) and Demetrius Zvonimir (1075–1089).
The state was ruled mostly by the Trpimirović dynasty until 1091. At that point the realm experienced a succession crisis and after a decade of conflicts for the throne and the aftermath of the Battle of Gvozd Mountain, the crown passed to the Árpád dynasty with the coronation of King Coloman of Hungary as "King of Croatia and Dalmatia" in Biograd in 1102, uniting the two kingdoms under one crown.Larousse online encyclopedia, Histoire de la Croatie: "Liée désormais à la Hongrie par une union personnelle, la Croatie, pendant huit siècles, formera sous la couronne de saint Étienne un royaume particulier ayant son ban et sa diète." Clifford J. Rogers: The Oxford Encyclopedia of Medieval Warfare and Military Technology, Volume 1, Oxford University Press, 2010, p. 293Kristó Gyula: A magyar–horvát perszonálunió kialakulása [The formation of Croatian-Hungarian personal union] (in Hungarian)
The precise terms of the relationship between the two realms became a matter of dispute in the 19th century. The nature of the relationship varied through time, with Croatia retaining a large degree of internal autonomy overall, while the real power rested in the hands of the local nobility.John Van Antwerp Fine: The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century, 1991, p. 288 Modern Croatian and Hungarian historiographies mostly view the relations between the Kingdom of Croatia and the Kingdom of Hungary from 1102 as a form of unequal personal union of two internally autonomous kingdoms united by a common Hungarian king.Barna Mezey: Magyar alkotmánytörténet, Budapest, 1995, p. 66
Name The first official name of the country was "Kingdom of the Croats" (; ),Ferdo Šišić: Povijest Hrvata u vrijeme narodnih vladara, p. 651 but over the course of time the name "Kingdom of Croatia" (Regnum Croatiae;Monumenta spectantia historiam Slavorum meridionalium, Edidit Academia Scienciarum et Artium Slavorum Meridionalium vol VIII, Zagreb, 1877, p. 199 Kraljevina Hrvatska) prevailed. Although already Tomislav, King of Croatia in 925 "ruled in the province of the Croats and in the Dalmatian regions" (in provincia Croatorum et Dalmatiarum finibus), only from 1060 when king Peter Krešimir IV gained control over the Dalmatian city-states of the Theme of Dalmatia, formerly under the Byzantine Empire, the official and diplomatic name of the kingdom became "Kingdom of Croatia and Dalmatia" (Regnum Croatiae et Dalmatiae; Kraljevina Hrvatska i Dalmacija), with which title of "Rex Chroatie atque Dalmatie" was crowned Demetrius Zvonimir in 1075/1076. Another often Hungarian synonym, as used by Ladislaus I of Hungary in his 1091 diplomatic letter, was Sclavoniam iam fere totam (acquisivi) ("Whole of S(c)lavonia"). In other European documents Sclavonia was also a common synonym for Croatia and Dalmatia.
Background
The Slavs arrived in southeastern Europe in the early 7th century and established several states, including the Duchy of Croatia. The Christianization of the Croats began soon after their arrival and was completed by the beginning of the 9th century. The rule over the duchy alternated between the rival Domagojević and Trpimirović dynasties. The duchy was rivaled by the neighbouring Republic of Venice, fought and allied with the First Bulgarian Empire, and went through periods of vassalage to the Carolingian Empire and the Byzantine Empire. In 879, Pope John VIII recognized Duke Branimir as an independent ruler.
History Kingdom
Establishment
Croatia was elevated to the status of kingdom somewhere around 925. Tomislav was the first Croatian ruler whom the papal chancellery honoured with the title "king".Neven Budak – Prva stoljeća Hrvatske, Zagreb, 1994., p. 22 It is generally said that Tomislav was crowned in 925, but it is not known when or by whom he was crowned, or, indeed, if he was crowned at all. Tomislav is mentioned as a king in two preserved documents published in the Historia Salonitana. First in a note preceding the text of the conclusions of the Council of Split in 925, where it is written that Tomislav is the "king" ruling "in the province of the Croats and in the Dalmatian regions" (in prouintia Croatorum et Dalmatiarum finibus Tamisclao rege),Ivo Goldstein: Hrvatski rani srednji vijek, Zagreb, 1995, p. 274-275Curta 2006, p. 196Codex Diplomaticus Regni Croatiæ, Dalamatiæ et Slavoniæ, Vol I, p. 32 while in the 12th canon of the Council conclusions the ruler of the Croats is called "king" (rex et proceres Chroatorum). In a letter sent by Pope John X, Tomislav is named "King of the Croats" (Tamisclao, regi Crouatorum).Codex Diplomaticus Regni Croatiæ, Dalamatiæ et Slavoniæ, Vol I, p. 34 The Chronicle of the Priest of Duklja titled Tomislav as a king and specified his rule at 13 years. Although there are no inscriptions of Tomislav to confirm the title, later inscriptions and charters confirm that his 10th century successors called themselves "kings". Under his rule, Croatia became one of the most powerful kingdoms in the Balkans.
Tomislav, a descendant of Trpimir I, is considered one of the most prominent members of the Trpimirović dynasty. Sometime between 923 and 928, Tomislav succeeded in uniting the Croats of Pannonia and Dalmatia, each of which had been ruled separately by dukes. Although the exact geographical extent of Tomislav's kingdom is not fully known, Croatia probably covered most of Dalmatia, Pannonia, and northern and western Bosnia.John Van Antwerp Fine: The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century, 1991, p. 262 Croatia at the time was administered as a group of eleven counties (županije) and one banate (Banovina). Each of these regions had a fortified royal town.
Croatia soon came into conflict with the Bulgarian Empire under Simeon I (called Simeon the Great in Bulgaria), who was already in a war with the Byzantines. Tomislav made a pact with the Byzantine Empire, for which he may have been rewarded by the Byzantine Emperor Romanos I Lekapenos with some form of control over the coastal cities of the Byzantine Theme of Dalmatia and with a share of the tribute collected from them. After Simeon conquered the Principality of Serbia in 924, Croatia received and protected the expelled Serbs with their leader Zaharija.De Administrando Imperio: XXXII. Of the Serbs and of the country they now dwell in In 926, Simeon tried to break the Croatian-Byzantine pact and afterwards conquer the weakly defended Byzantine Theme of Dalmatia,Ivo Goldstein: Hrvatski rani srednji vijek, Zagreb, 1995, p. 289-291 sending Duke Alogobotur with a formidable army against Tomislav, but Simeon's army was defeated in the Battle of the Bosnian Highlands. After Simeon's death in 927 peace was restored between Croatia and Bulgaria with the mediation of the legates of Pope John X.Clifford J. Rogers: The Oxford Encyclopedia of Medieval Warfare and Military Technology, p. 162 According to the contemporary De Administrando Imperio, the Croatian army and navy at the time could have consisted of approximately 100,000 infantry units, 60,000 cavaliers, and 80 larger (sagina) and 100 smaller warships (condura),De Administrando Imperio: 31. Of the Croats and of the country they now dwell in. "Baptized Croatia musters as many as 60 thousand horse and 100 thousand foot, and galleys up to 80 and cutters up to 100." but these numbers are generally taken as a considerable exaggeration. According to the palaeographic analysis of the original manuscript of De Administrando Imperio, the population of medieval Croatia was estimated at between 440,000 and 880,000 people, while the military force was most probably composed of 20,000–100,000 infantrymen and 3,000–24,000 horsemen organized into 60 allagions.
10th century
Croatian society underwent major changes in the 10th century. Local leaders, the župani, were replaced by the retainers of the king, who took land from the previous landowners, essentially creating a feudal system. The previously free peasants became serfs and ceased being soldiers, causing the military power of Croatia to fade.
Tomislav was succeeded by Trpimir II () and Krešimir I (), who each managed to maintain their power and keep good relations with both the Byzantine Empire and the Pope. This period, on the whole, however, is obscure. The rule of Krešimir's son Miroslav was marked by a gradual weakening of Croatia.Ivo Goldstein: Hrvatski rani srednji vijek, Zagreb, 1995, p. 302 Various peripheral territories took advantage of unsettled conditions to secede.John Van Antwerp Fine: The Early Medieval Balkans: A Critical Survey from the Sixth to the Late Twelfth Century, 1991, p. 265 Miroslav ruled for 4 years when he was killed by his ban, Pribina, during an internal power struggle. Pribina secured the throne to Michael Krešimir II (949–969), who restored order throughout most of the state. He kept particularly good relations with Dalmatian city-states, he and his wife Helen donating land and churches to Zadar and Solin. Michael Krešimir's wife Helen built the Churches of Saint Mary and Saint Stephen in Solin that served as the tomb of Croatian rulers (see Church of Saint Stephen on Otok). Helen died on 8 October 976 and was buried in that church, where a royal inscription on her sarcophagus was found that called her "Mother of the Kingdom".Ivo Goldstein: Hrvatski rani srednji vijek, Zagreb, 1995, p. 314-315
Michael Krešimir II was succeeded by his son Stephen Držislav (969–997), who established better relations with the Byzantine Empire and their Theme of Dalmatia. According to Historia Salonitana, Držislav received royal insignia from the Byzantines, together with the title of eparch and patricius. Also, according to this work, from the time of Držislav's reign his successors called themselves "kings of Croatia and Dalmatia". Stone panels from the altar of a 10th-century church in Knin with the inscription of Držislav, possibly when he was the heir to the throne, show that there was a precisely defined hierarchy regulating the matters of succession to the throne.
11th century