Kingdom of Bosnia in the context of "Medieval Bosnia"

Bosnia and Herzegovina, often referred to as Bosnia-Herzegovina or short as Bosnia, is a country in Southeast Europe. Situated on the Balkan Peninsula, it borders Serbia to the east, Montenegro to the southeast, and Croatia to the north and southwest, with a 20-kilometre-long (12-mile) coast on the Adriatic Sea in the south. Bosnia has a moderate continental climate with hot summers and cold, snowy winters. Its geography is largely mountainous, particularly in the central and eastern regions, which are dominated by the Dinaric Alps. Herzegovina, the smaller, southern region, has a Mediterranean climate and is mostly mountainous. Sarajevo is the capital and the largest city.

The area has been inhabited since at least the Upper Palaeolithic, with permanent human settlement traced to the Neolithic cultures of Butmir, Kakanj, and Vučedol. After the arrival of the first Indo-Europeans, the area was populated by several Illyrian and Celtic civilisations. Most of modern Bosnia was incorporated into the Roman province of Dalmatia by the mid-first century BCE. The ancestors of the modern South Slavic peoples arrived between the sixth and ninth centuries. In the 12th century, the Banate of Bosnia was established as the first independent Bosnian polity. It gradually evolved and expanded into the Kingdom of Bosnia, which became the most powerful state in the western Balkans by the 14th century. The Ottoman Empire annexed the region in 1463 and introduced Islam. From the late 19th century until World War I, the country was annexed into the Austro-Hungarian monarchy. In the interwar period, Bosnia and Herzegovina was part of the Kingdom of Yugoslavia. After World War II, it was granted full republic status in the newly formed Socialist Federal Republic of Yugoslavia. In 1992, following the breakup of Yugoslavia, the republic proclaimed independence. This was followed by the Bosnian War, which lasted until late 1995 and ended with the signing of the Dayton Agreement.

The Battle of Kosovo took place on 15 June 1389 between an army led by the Serbian Prince Lazar Hrebeljanović and an invading army of the Ottoman Empire under the command of Sultan Murad I. It was one of the largest battles of the Late Middle Ages.

The battle was fought on the Kosovo field in the territory ruled by Serbian nobleman Vuk Branković, in what is today Kosovo, about 5 kilometers (3.1 mi) northwest of the modern city of Pristina. The army under Prince Lazar consisted mostly of his own troops, a contingent led by Branković, and a contingent sent from Bosnia by King Tvrtko I, commanded by Vlatko Vuković. Additionally, Lazar was also supported by a Christian coalition from various European ethnic groups. Prince Lazar was the ruler of Moravian Serbia and the most powerful among the Serbian regional lords of the time, while Branković ruled the District of Branković and other areas, recognizing Lazar as his overlord.

Islam is the second-largest religion in Europe after Christianity. Although the majority of Muslim communities in Western Europe formed as a result of immigration, there are centuries-old indigenous European Muslim communities in the Balkans, Caucasus, Crimea, and Volga region. The term "Muslim Europe" is used to refer to the Muslim-majority countries in the Balkans and the Caucasus (Albania, Azerbaijan, Bosnia and Herzegovina, Kosovo, and Turkey) and parts of countries in Central and Eastern Europe with sizable Muslim minorities (Bulgaria, Montenegro, North Macedonia, and some republics of Russia) that constitute large populations of indigenous European Muslims, although the majority are secular.

Islam expanded into the Caucasus through the Muslim conquest of Persia in the 7th century and entered Southern Europe after the Umayyad conquest of Hispania in the 8th–10th centuries; Muslim political entities existed firmly in what is today Spain, Portugal, Sicily, and Malta during the Middle Ages. The Muslim populations in these territories were either converted to Christianity or expelled by the end of the 15th century by the indigenous Christian rulers (see Reconquista). The Ottoman Empire expanded into Southeastern Europe and consolidated its political power by invading and conquering huge portions of the Serbian and Bulgarian empires, and the remaining territories of the region, including the Albanian and Romanian principalities, and the kingdoms of Bosnia, Croatia, and Hungary between the 14th and 16th centuries. Over the centuries, the Ottoman Empire gradually lost its European territories. Islam was particularly influential in the territories of Albania, Bosnia and Herzegovina, and Kosovo, and has remained the dominant religion in these countries.

The Croats of Bosnia and Herzegovina (Croatian: Hrvati Bosne i Hercegovine), often referred to as Bosnian Croats (bosanski Hrvati) or Herzegovinian Croats (hercegovački Hrvati), are native to Bosnia and Herzegovina and constitute the third most populous ethnic group, after Bosniaks and Serbs. They are one of the three constitutive nations of Bosnia and Herzegovina. Croats of Bosnia and Herzegovina have made significant contributions to the culture of Bosnia and Herzegovina. Most Croats identify themselves as Catholics and speak Croatian language.

Croats have been present in Bosnia and Herzegovina since the Slavic migrations to the Balkans. The Kingdom of Croatia under native rulers and later in personal union with Hungary encompassed large parts of Bosnia and Herzegovina in the west until the 16th century. The Croats also lived under the Kingdom of Bosnia until it fell to the Ottoman Empire in the second half of the 15th century. Between the 15th and 19th centuries, Catholics in Ottoman Bosnia and Herzegovina were often persecuted by the Ottomans, prompting many to flee the area, especially during the Great Turkish War and the Morean War in the second half of the 17th century, when their numbers were reduced to 30,000. At the end of the 17th century and in the early 18th century, the number of Catholics began to increase, with many of those who had fled returning. In the second half of the 19th century, especially during the Austro-Hungarian rule in Bosnia and Herzegovina, the Croats became active political subjects, participating in Croatian national revival. The 20th century brought political turmoil, and poor economic conditions led to increased emigration. Ethnic cleansing within Bosnia and Herzegovina in the 1990s saw Croats forced to go to different parts of Bosnia and Herzegovina, despite having lived in numerous regions before the Bosnian War. The 2013 population census in Bosnia and Herzegovina recorded 544,780 residents registering as of Croat ethnicity.

The House of Kosača (Serbian Cyrillic: Косача, pl. Kosače / Косаче), somewhere Kosačić (Serbian Cyrillic: Косачић, pl. Kosačići / Косачићи), was a Bosnian medieval noble family which ruled over parts of modern-day Bosnia and Herzegovina, Croatia, Montenegro, and Serbia between the 14th century and the 15th century. The land they controlled was known as Humska zemlja (Hum, for short), roughly corresponding to modern region of Herzegovina, which itself was derived from the title "Herzog", which Stjepan Vukčić Kosača adopted in 1448., with latin title "Dux Sancti Sabbae". Besides Hum, they ruled parts of Dalmatia and Rascia. They were vassals to several states, including the Kingdom of Bosnia and Ottoman Empire. Historians think the Kosača family is part of the Kőszegi family (House of Herceg), but there is a lack of evidence for this claim.

The religious confession of the Kosača family is uncertain. They were in contact with the Eastern Orthodox Church, the Church of Bosnia, the Catholic Church and Islam. During the fall of the Bosnian Kingdom, the "Kosače" split into three branches: Venetian, Dalmatian and Ottoman. From then onward, these branches became accepting of the Catholic faith, in the first two cases, and of Islam in the third.

Ottoman Serbia refers to the Ottoman period in the history of Serbia. Various regions of medieval Serbia came under Ottoman rule already at the end of the 14th century, while the Serbian Despotate fell in 1459. Northern regions of what is now the Republic of Serbia were incorporated into the Ottoman Empire during later conquests, from 1521 to 1552. Since the Habsburg expansion towards those northern regions, in 1699 and 1718, Ottoman rule was gradually reduced to Serbian territories south of the Sava and Danube rivers (1739). From 1804 to 1830, the Principality of Serbia was gradually restored, as a vassal state of the Ottoman Empire. It gained independence in 1878, and expanded into southern regions, thus reducing Ottoman control to the historical region of the Old Serbia, that was liberated in 1912, thus ending Ottoman rule in Serbian lands.

The Ottoman conquest of the Balkans was initiated in the middle of the 14th century, leding to consequent conflicts with various Serbian states. The Ottomans defeated the Serbs at the Battle of Maritsa in 1371, and again at the Battle of Kosovo in 1389, forcing several Serbian regional lords to became sultan's vassals. In 1439, the Serbian Despotate was conquered for the first time, but restored in 1444. In 1459, the Despotate was conquered again, this time finally. Similarly, the Principality of Zeta was conquered by the Ottomans for the first time in 1479, but restored in 1481, to be finally conquered in 1496. In the meantime, the Kingdom of Bosnia was conquered by the ottomans in 1463, and the Duchy of Saint Sava in 1482. Thus by the end of the 15th century, Ottoman rule was established firmly, by imposing new provincial administration in conquered lands.

Stephen Tvrtko I (Serbo-Croatian: Stjepan/Stefan Tvrtko / Стјепан/Стефан Твртко; c. 1338 – 10 March 1391) was the first king of Bosnia. A member of the House of Kotromanić, he succeeded his uncle Stephen II as the ban of Bosnia in 1353. As he was a minor at the time, Tvrtko's father, Vladislav, briefly ruled as regent, followed by Tvrtko's mother, Jelena. Early in his personal rule, Tvrtko quarrelled with his country's Roman Catholic clergy but later enjoyed cordial relations with all the religious communities in his realm. After initial difficulties—the loss of large parts of Bosnia to his overlord, King Louis I of Hungary, and being briefly deposed by his magnates—Tvrtko's power grew considerably. He conquered some remnants of the neighbouring Serbian Empire in 1373, after the death of its last ruler and his distant relative, Uroš the Weak. In 1377, he had himself crowned king of Bosnia and Serbia, claiming to be the heir of Serbia's extinct Nemanjić dynasty.

As the Kingdom of Bosnia continued to expand, Tvrtko's attention shifted to the Adriatic coast. He gained control of the entire Primorje region and the major maritime cities of the area, established new settlements and started building a navy, but never succeeded in subjugating the lords of the independent Serbian territories. The death of King Louis and the accession of Queen Mary in 1382 allowed Tvrtko to take advantage of the ensuing succession crisis in Hungary and Croatia. After bitter fighting, from 1385 to 1390, Tvrtko succeeded in conquering large parts of Dalmatia, and Croatia proper. Following the Battle of Kosovo in 1389, his tenuous claim to Serbia became a mere fiction, as the Serbian rulers he sought to subdue became vassals of the victorious Ottoman Empire. The Ottoman Turks also launched their first attacks on Bosnia during Tvrtko's reign, but his army was able to repel them. Tvrtko's sudden death in 1391 prevented him from solidifying the Kotromanić hold on Croatian lands.

The Ottoman conquest of Bosnia and Herzegovina was a process that started roughly in 1386, when the first Ottoman attacks on the Kingdom of Bosnia took place. In 1451, more than 65 years after its initial attacks, the Ottoman Empire officially established the Bosansko Krajište (Bosnian Frontier), an interim borderland military administrative unit, an Ottoman frontier, in parts of Bosnia and Herzegovina. In 1463, the Kingdom fell to the Ottomans, and this territory came under its firm control. Herzegovina gradually fell to the Ottomans by 1482. It took another century for the western parts of today's Bosnia to succumb to Ottoman attacks, ending with the capture of Bihać in 1592.