Transylvania is a historical region in central and northwestern Romania. It was under the rule of the Agathyrsi, part of the Dacian Kingdom (168 BC–106 AD), Roman Dacia (106–271), the Goths, the Hunnic Empire (4th–5th centuries), the Kingdom of the Gepids (5th–6th centuries), the Avar Khaganate (6th–9th centuries), the Slavs, and the 9th century First Bulgarian Empire. During the late 9th century, Transylvania was part of the Hungarian conquest, and the family of Gyula II of the seven chieftains of the Hungarians ruled Transylvania in the 10th century. King Stephen I of Hungary asserted his claim to rule all lands dominated by Hungarian lords, and he personally led his army against his maternal uncle Gyula III. Transylvania became part of the Kingdom of Hungary in 1002, and it belonged to the Lands of the Hungarian Crown until 1920.

After the Battle of Mohács in 1526 it belonged to the Eastern Hungarian Kingdom, from which the Principality of Transylvania emerged in 1570 by the Treaty of Speyer. During most of the 16th and 17th centuries, the principality was a vassal state of the Ottoman Empire; however, the principality had dual suzerainty (Ottoman and Habsburg kings of Hungary).Dennis P. Hupchick, Conflict and chaos in Eastern Europe, Palgrave Macmillan, 1995, p. 62Peter F. Sugar, Southeastern Europe under Ottoman rule, 1354–1804, University of Washington Press, 1993, pp. 150–154

In 1690, the Habsburg dynasty claimed and gained possession of Transylvania through the historic rights of the Hungarian crown.Peter F. Sugar. "Southeastern Europe Under Ottoman Rule, 1354–1804" (History of East Central Europe), University of Washington Press, July 1983, page 163Paul Lendvai, Ann Major. The Hungarians: A Thousand Years of Victory in Defeat C. Hurst & Co. Publishers, 2003, page 146; After the failure of Rákóczi's War of Independence in 1711, Habsburg control of Transylvania was consolidated and Hungarian Transylvanian princes were replaced with Habsburg imperial governors."Transylvania" (2009). Encyclopædia Britannica. Retrieved July 7, 2009"Diploma Leopoldinum" (2009). Encyclopædia Britannica. Retrieved July 7, 2009 During the Hungarian Revolution of 1848, the Hungarian government proclaimed union with Transylvania in the April Laws of 1848.Laszlo Péter, Hungary's Long Nineteenth Century: Constitutional and Democratic Traditions in a European Perspective, BRILL, 2012, p. 56 After the failure of the revolution, the March Constitution of Austria decreed that the Principality of Transylvania be a separate crown land entirely independent of Hungary.Austrian Constitution of 4 March 1849. (Section I, Art. I and Section IX., Art. LXXIV) After the Austro-Hungarian Compromise of 1867, the separate statusJohn F. Cadzow, Andrew Ludanyi, Louis J. Elteto, Transylvania: The Roots of Ethnic Conflict, Kent State University Press, 1983, page 79 of Transylvania ceased and the region was incorporated again into the Kingdom of Hungary (Transleithania) as part of the Austro-Hungarian Empire.James Minahan: One Europe, many nations: a historical dictionary of European national groups, Greenwood Press, Westport, CT 06991 During this period the Romanian community experienced the awakening of self-consciousness as a nation, which was manifested in cultural and ideological movements such as Transylvanian School, and the drafting of political petitions such as Supplex Libellus Valachorum. After World War I, the National Assembly of Romanians from Transylvania proclaimed the Union of Transylvania with Romania on 1 December 1918. Transylvania became part of Kingdom of Romania by the Treaty of Trianon in 1920. In 1940, Northern Transylvania reverted to Hungary as a result of the Second Vienna Award, but it was returned to Romania after the end of World War II.

Due to its varied history, the population of Transylvania is ethnically, linguistically, culturally and religiously diverse. From 1437 to 1848 political power in Transylvania was shared among the mostly Hungarian nobility, German burghers and the seats of the Székelys (a Hungarian ethnic group). The population consisted of Romanians, Hungarians (particularly Székelys) and Germans. The majority of the present population is Romanian, but large minorities (mainly Hungarian and Roma) preserve their traditions. However, as recently as the Romanian communist era, ethnic-minority relations remained an issue of international contention. This has abated (but not disappeared) since the Revolution of 1989. Transylvania retains a significant Hungarian-speaking minority, slightly less than half of which identify themselves as Székely. Ethnic Germans in Transylvania (known there as Saxons) comprise about one percent of the population; however, Austrian and German influences remain in the architecture and urban landscape of much of Transylvania.

The region's history may be traced through the religions of its inhabitants. For the first time in history, the Diet of Torda in 1568 declared freedom of religion. There was no state religion, while in other parts of Europe and the world religious wars were fought. The Roman Catholic, Lutheran, Calvinist, and Unitarian Churches and religions were declared to be fully equal, and the Romanian Orthodox religion was tolerated. Most Romanians in Transylvania belong to the Eastern Orthodox Church faith, but from the 18th to the 20th centuries the Romanian Greek-Catholic Church also had substantial influence. Hungarians primarily belong to the Roman Catholic or Reformed Churches; a smaller number are Unitarians. Of the ethnic Germans in Transylvania, the Saxons have primarily been Lutheran since the Reformation; however, the Danube Swabians are Catholic. The Baptist Union of Romania is the second-largest such body in Europe; Seventh-day Adventists are established, and other evangelical churches have been a growing presence since 1989. No Muslim communities remain from the era of the Ottoman invasions. As elsewhere, anti-Semitic 20th century politics saw Transylvania's once sizable Jewish population greatly reduced by the Holocaust and emigration.

Name of Transylvania

The earliest known reference to Transylvania appears in a Medieval Latin document of the Kingdom of Hungary in 1075 as "ultra silvam", in the Gesta Hungarorum as "terra ultrasilvana", meaning "land beyond the forest" ("terra" means land, "ultra" means "beyond" or "on the far side of" and the accusative case of "silva", "silvam" means "woods, forest"). Transylvania, with an alternative Latin prepositional prefix, means "on the other side of the woods". The Hungarian form Erdély was first mentioned in the Gesta Hungarorum as "Erdeuelu". The Medieval Latin form "Ultrasylvania", later Transylvania, was a direct translation from the Hungarian form "Erdőelve" ("erdő" means "forest" and "elve" means "beyond" in old Hungarian).Engel, Pál (2001). Realm of St. Stephen: History of Medieval Hungary, 895–1526 (International Library of Historical Studies), page 24, London: I.B. Taurus. Part of the Tudomány – Egyetem [Science – University] series edited by Ferenc Glatz That also was used as an alternative name in German "Überwald" ("über" means "beyond" and "wald" means forest) in the 13th–14th centuries. The earliest known written occurrence of the Romanian name Ardeal appeared in a document in 1432 as "Ardeliu". The Romanian Ardeal is derived from the Hungarian Erdély. Erdelj in Serbian and Croatian, Erdel in Turkish were borrowed from this form as well.

According to the Romanian linguist Nicolae Drăganu, the Hungarian name of Transylvania evolved over time from Erdőelü, Erdőelv, Erdőel, Erdeel in chronicles and written charters from 1200 up to late 1300. In written sources from 1390, we can find also the form Erdel, which can be read also as Erdély. There is evidence for that in the written Wallachian Chancellery Charters expressed in Slavonic where the word appears as Erûdelû (1432), Ierûdel, Ardelîu (1432), ardelski (1460, 1472, 1478–1479, 1480, 1498, 1507–1508, 1508), erdelska, ardelska (1498). With the first texts written in Romanian (1513) the name Ardeal appears to be written. Drăganu claims that the greatest Romanian philologists and historians maintain that Ardeal came from Hungarian.

Ancient history

Scythians According to the archaeological evidence, Transylvania was ruled by several proto-Scythian groups, but the first of which we know by name were the Agathyrsi.

Herodotus gives an account of the Agathyrsi, who lived in Transylvania during the fifth century BCE. He described them as a luxurious people who enjoyed wearing gold ornaments. Herodotus also claimed that the Agathyrsi held their wives in common, so all men would be brothers.

The Agathyrsi, later partly assimilated into the Dacians.

Dacian states

A kingdom of Dacia existed at least as early as the early second century BCE under King Oroles. Under Burebista, the foremost king of Dacia and a contemporary of Julius Caesar, the kingdom reached its maximum extent. The area now constituting Transylvania was the political center of Dacia.

The Dacians are often mentioned by Augustus, according to whom they were compelled to recognize Roman supremacy. However, they were not subdued and in later times crossed the frozen Danube during winter and ravaging Roman cities in the recently acquired Roman province of Moesia.

The Dacians built several important fortified cities, among them Sarmizegetusa (near the present Hunedoara). They were divided into two classes: the aristocracy (tarabostes) and the common people (comati).

Roman-Dacian Wars

The Roman Empire expansion in the Balkans brought the Dacians into open conflict with Rome. During the reign of Decebalus, the Dacians were engaged in several wars with the Romans from 85 to 89 CE. After two reverses, the Romans gained an advantage but were obliged to make peace due to the defeat of Domitian by the Marcomanni. Domitian agreed to pay large sums (eight million sesterces) in annual tribute to the Dacians for maintaining peace.

In 101, the emperor Trajan began a military campaign against the Dacians, which included a siege of Sarmizegetusa Regia and the occupation of part of the country. Estimates give a total of 90,000 soldiers represented by 7 legions, 24 cohorts of auxiliary cavalry and more than 70 cohorts of auxiliary infantry. The Romans prevailed but Decebalus was left as a client king under a Roman protectorate and the territories outside the Carpathian arch were occupied by the Romans. The peace lasted only 3 years and Trajan quickly began a new campaign against Decebalus (105–106). The battle for Sarmizegetusa Regia took place in the early summer of 106 with the participation of the II Adiutrix and IV Flavia Felix legions and a detachment (vexillatio) from the Legio VI Ferrata. The city was set on fire, the pillars of the sacred sanctuaries were cut down and the fortification system was destroyed; however, the war continued. Decebalus' dramatic flee, ended days later with the former king taking his own life. Through the treason of Bacilis (a confidant of the Dacian king), the Romans found Decebalus' treasure in the Strei River(estimated by Jerome Carcopino as 165,500 kg of gold and 331,000 kg of silver). The last battle with the army of the Dacian king took place at Napoca.