Kingdom of Croatia (1102–1526) in the context of "Mongol invasion of Europe"

Louis I, also known as Louis the Great (Hungarian: Nagy Lajos; Croatian: Ludovik Veliki; Slovak: Ľudovít Veľký) or Louis the Hungarian (Polish: Ludwik Węgierski; 5 March 1326 – 10 September 1382), was King of Hungary and Croatia from 1342 and King of Poland from 1370 until his death in 1382. He was the first child of Charles I of Hungary and his wife, Elizabeth of Poland, to survive infancy. A 1338 treaty between his father and Casimir III of Poland, Louis's maternal uncle, confirmed Louis's right to inherit the Kingdom of Poland if his uncle died without a son. In exchange, Louis was obliged to assist his uncle to reoccupy the lands that Poland had lost in previous decades. He bore the title Duke of Transylvania between 1339 and 1342 but did not administer the province.

Louis was of age when he succeeded his father in 1342, but his deeply religious mother exerted a powerful influence on him. He inherited a centralized kingdom and a rich treasury from his father. During the first years of his reign, Louis launched a crusade against the Lithuanians and restored royal power in Croatia; his troops defeated a Tatar army, expanding his authority towards the Black Sea. When his brother, Andrew, Duke of Calabria, husband of Queen Joanna I of Naples, was assassinated in 1345, Louis accused the queen of his murder and punishing her became the principal goal of his foreign policy. He launched two campaigns to the Kingdom of Naples between 1347 and 1350. His troops occupied large territories on both occasions, and Louis adopted the styles of Neapolitan sovereigns (including the title of King of Sicily and Jerusalem), but the Holy See never recognized his claim. Louis's arbitrary acts and atrocities committed by his mercenaries made his rule unpopular in Southern Italy. He withdrew all his troops from the Kingdom of Naples in 1351.

Andrew II (Hungarian: II. András, Croatian: Andrija II., Slovak: Ondrej II., Ukrainian: Андрій II; c. 1177 – 21 September 1235), also known as Andrew of Jerusalem, was King of Hungary and Croatia between 1205 and 1235. He ruled the Principality of Halych from 1188 until 1189/1190, and again between 1208/1209 and 1210. He was the younger son of Béla III of Hungary, who entrusted him with the administration of the newly conquered Principality of Halych in 1188. Andrew's rule was unpopular, and the boyars (or noblemen) expelled him. Béla III willed property and money to Andrew, obliging him to lead a crusade to the Holy Land. Instead, Andrew forced his elder brother, King Emeric of Hungary, to cede Croatia and Dalmatia as an appanage to him in 1197. The following year, Andrew occupied Hum.

Although Andrew did not stop conspiring against Emeric, the dying king made Andrew guardian of his son, Ladislaus III, in 1204. After the premature death of Ladislaus, Andrew ascended the throne in 1205. According to historian László Kontler, "[i]t was amidst the socio-political turmoil during [Andrew's] reign that the relations, arrangements, institutional framework and social categories that arose under Stephen I, started to disintegrate in the higher echelons of society" in Hungary. Andrew introduced a new grants policy, the so-called "new institutions", giving away money and royal estates to his partisans despite the loss of royal revenues. He was the first Hungarian monarch to adopt the title of "King of Halych and Lodomeria". He waged at least a dozen wars to seize the two Rus' principalities, but was repelled by the local boyars and neighboring princes. He participated in the Fifth Crusade to the Holy Land in 1217–1218, but the crusade was a failure.

A captaincy (Spanish: capitanía [kapitaˈni.a], Portuguese: capitania [kɐpitɐˈni.ɐ], Croatian: kapetanija) is a historical administrative division of the former Spanish and Portuguese colonial empires. It was instituted as a method of organization, directly associated with the home-rule administrations of medieval feudal governments in which the monarch delimited territories for colonization that were administered by men of confidence.

The same term was or is used in some other countries, such as Croatia, Hungary, Italy, Ottoman Empire, Slovakia or Austria.

Emeric, also known as Henry or Imre (Hungarian: Imre, Croatian: Emerik, Slovak: Imrich; 1174 – 30 November 1204), was King of Hungary and Croatia between 1196 and 1204. In 1184, his father, Béla III of Hungary, ordered that he be crowned king, and appointed him as ruler of Croatia and Dalmatia around 1195. Emeric ascended the throne after the death of his father. During the first four years of his reign, he fought his rebellious brother, Andrew, who forced Emeric to make him ruler of Croatia and Dalmatia as appanage.

Emeric cooperated with the Holy See against the Bosnian Church, which the Catholic Church considered to be heretical. Taking advantage of a civil war, Emeric expanded his suzerainty over Serbia. He failed to prevent the Republic of Venice, which was assisted by crusaders of the Fourth Crusade, from seizing Zadar in 1202. He also could not impede the rise of Bulgaria along the southern frontiers of his kingdom. Emeric was the first Hungarian monarch to use the "Árpád stripes" as his personal coat of arms and to adopt the title of King of Serbia. Before his death, Emeric had his four-year-old son, Ladislaus III, crowned king.