History of Denmark between 1397 - 1522
The most important aspect of the Kalmar Union was the personal union between the three kingdoms of Denmark, Norway and Sweden. Also included in this fellowship was Finland, that was a part of Sweden (until 1809), and Iceland, Greenland, the Faroes and the Shetland archipelago, belonging to Norway, meaning that the union encompassed all of the Nordic countries. The formal marking of the unification took place in the Swedish city of Kalmar, where Erik of Pomerania was crowned king of all three realms in 1397. The union’s centre of power was located in Denmark, but all the countries were principally ruled according to their own laws and traditions.
In connection with his wars, Erik of Pomerania had also drafted soldiers and raised taxes in Sweden and Norway. This lead to a peasant rebellion in Sweden in 1434, which quickly gained support from the Swedish aristocracy. In 1436, a similar uprising took place around Oslo in Norway. The consequence of this would be assorted standstills, agreements and new uprisings, which eventually culminated in Erik of Pomerania being deposed as king of Denmark and Sweden in 1439. Before this, a massive peasant rebellion had also broken out in Denmark.
His nephew, Christoffer of Bavaria, who in the period from 1440 to 1442 managed to become king of all three realms, succeeded Erik. This would be the end of the strongly centralised government that Margrethe and Erik had maintained during their reigns. The Councils of the Realms in the individual countries had been responsible for this change in king, and thus increased the own power afterwards.
Christoffer of Bavaria died at an early age in 1448, leaving no children. Afterwards, the Swedes elected the Swedish magnate Karl Knutsson as king, while Denmark chose a distant relative of the Danish kings, Christian of Oldenburg. Following this, a race began to claim the crown of Norway, which Christian I won in 1450. A few years later, Christian managed to take advantage of an internal disagreement in Sweden to become the king of Sweden in 1457. However, his reign there would only last until 1464, where he was deposed and Karl Knutsson returned. After Knutsson’s death in 1470, Christian I made another ambitious attempt to claim the Swedish crown, but suffered an ignominious defeat at the Battle of Brunkeberg in 1471.
Christian had made sure that his own son, Hans, would be his successor in all three kingdoms. After Christian’s death in 1481, protracted negotiations began about the terms of Hans’s kingship of the three realms. When all the details had been agreed upon, however, the Swedes bailed at the last minute, meaning that Hans had to settle for becoming king of only Denmark and Norway in 1483. In 1497, the Swedish aristocracy was again in disagreement, which Hans used to become king of Sweden. It would only be four years, however, before he was deposed in 1501.
The final attempt at sustaining the Kalmar Union was made by King Hans’s son, Christian II, who became king of Denmark and Norway in 1513. His ambition was to strengthen the Royal power and reclaim Sweden, which – after yet more internal disagreements in Sweden – he succeeded at in 1520. Shortly after Christian II’s festive crowning ceremony, the Stockholm Bloodbath was carried out, killing 82 former enemies of Christian II. If Christian II believed that this would crush all future Swedish resistance against him, he would be sorely disappointed; on the contrary, the bloodbath led to a rebellion, and the year after, in 1521, Christian’s reign over Sweden ended. The rebellion was led by the Swedish magnate Gustav Vasa, who was crowned king of Sweden in 1523.
This signalled the end of the Kalmar Union, as well as the king’s fall in Denmark and Norway the same year. Christian II was deposed and replaced by his uncle, Frederik I. He, as well as Gustav Vasa of Sweden, feared that Christian’s powerful brother-in-law, Emperor Charles V, would put him back into power. Thus, the following years were characterised by a relative peace between the two countries, which in time would be called archenemies.
The Kalmar Union was caused by the inability of the three old Nordic royal families to produce more than one acceptable candidate at a time, coupled with the persistently rebellious nature of the Swedish magnates during the 14th century. During the 1400s, it became obvious, that this rebelliousness was a symptom of factions vying for power in Sweden. A number of Swedish magnates, due to connections through marriage and inheritances in several countries, had a vested interest in maintaining the Nordic personal union, while others sometimes saw an advantage in supporting the Danish kings in order to further their own positions in the power struggles. However, the dominant school of thought seems to have been that a personal union without a king provided the best opportunity for not having to share the power with a king. Therefore, the basic idea of the union persisted for so long.
From its origin as a small stronghold built by the ancient Illyrian tribe Dalmatae, becoming a royal castle that was the seat of many Croatian kings, to its final development as a large fortress during the Ottoman wars in Europe, Klis Fortress has guarded the frontier, being lost and re-conquered several times. Due to its location on a pass that separates the mountains Mosor and Kozjak, the fortress served as a major source of defense in Dalmatia, especially against the Ottoman advance, and has been a key crossroad between the Mediterranean belt and the Balkan rear.
Since Duke Mislav of the Duchy of Croatia made Klis Fortress the seat of his throne in the middle of the 9th century, the fortress served as the seat of many Croatia"s rulers. The reign of his successor, Duke Trpimir I, the founder of the Croatian royal House of Trpimirović, is significant for spreading Christianity in the Duchy of Croatia. He largely expanded the Klis Fortress, and in Rižinice, in the valley under the fortress, he built a church and the first Benedictine monastery in Croatia. During the reign of the first Croatian king, Tomislav, Klis and Biograd na Moru were his chief residences.
In March 1242 at Klis Fortress, Tatars who were a constituent segment of the Mongol army under the leadership of Kadan suffered a major defeat while in pursuit of the Hungarian army led by King Béla IV. After their defeat by Croatian forces, the Mongols retreated, and Béla IV rewarded many Croatian towns and nobles with 'substantial riches'. During the Late Middle Ages, the fortress was governed by Croatian nobility, amongst whom Paul I Šubić of Bribir was the most significant. During his reign, the House of Šubić controlled most of modern-day Croatia and Bosnia. Excluding the brief possession by the forces of Bosnian King, Tvrtko I, the fortress remained in Hungaro-Croatian hands for the next several hundred years, until the 16th century.
Klis Fortress is probably best known for its defense against the Ottoman invasion of Europe in the early 16th century. Croatian captain Petar Kružić led the defense of the fortress against a Turkish invasion and siege that lasted for more than two and a half decades. During this defense, as Kružić and his soldiers fought without allies against the Turks, the military faction of Uskoks was formed, which later became famous as an elite Croatian militant sect. Ultimately, the defenders were defeated and the fortress was occupied by the Ottomans in 1537. After more than a century under Ottoman rule, in 1669, Klis Fortress was besieged and seized by the Republic of Venice, thus moving the border between Christian and Muslim Europe further east and helping to contribute to the decline of the Ottoman Empire. The Venetians restored and enlarged the fortress, but it was taken by the Austrians after Napoleon extinguished the republic itself in 1797. Today, Klis Fortress contains a museum where visitors to this historic military structure can see an array of arms, armor, and traditional uniforms.