The history of Bulgaria can be traced from the first settlements on the lands of modern Bulgaria to its formation as a nation-state, and includes the history of the Bulgarian people and their origin. The earliest evidence of hominid occupation discovered in what is today Bulgaria date from at least 1.4 million years ago. Around 5000 BC, a sophisticated civilization already existed which produced some of the first pottery, jewellery and golden artifacts in the world. After 3500 BC, the Thracians appeared on the Balkan Peninsula. In the late 6th century BC, parts of what is currently Bulgaria, in particular the eastern region of the country, came under the Persian Achaemenid Empire. In the 470s BC, the Thracians formed the powerful Odrysian Kingdom which lasted until 46 BC, when it was finally conquered by the Roman Empire. During the centuries, some Thracian tribes fell under ancient Macedonian and Hellenistic, and also Celtic domination. This mixture of ancient peoples was assimilated by the Slavs, who permanently settled on the peninsula after 500 AD.
In 632 the Bulgars formed an independent state north of the Black sea that became known as Great Bulgaria under the leadership of Kubrat. Pressure from the Khazars led to the gradual disintegration of Great Bulgaria in the second half of the 7th century. One of Kubrat's successors, Asparuh, leading some of the Bulgar tribes settled in the area around the Danube delta, and subsequently conquered Scythia Minor and Moesia Inferior from the Byzantine Empire, expanding his new kingdom further into the Balkan peninsula. The crucial Battle of Ongal in 680, the peace treaty with Byzantium in 681, and the establishment of a permanent Bulgarian capital at Pliska south of the Danube mark the beginning of the First Bulgarian Empire. The new state brought together local Byzantine population and migrant population as Early Slavs under Bulgar rule, and a slow process of mutual assimilation began. In the following centuries Bulgaria established itself as a powerful empire, dominating the Balkans through its aggressive military traditions, which led to development of a distinct ethnic identity. Its ethnically and culturally diverse people united under a common religion, language and alphabet which formed and preserved the Bulgarian national consciousness despite foreign invasions and influences.
In the 11th century, the First Bulgarian Empire collapsed under multiple Rus' and Byzantine attacks and wars, and was conquered and became part of the Byzantine Empire until 1185. Then, a major uprising led by two brothers, Asen and Peter of the Asen dynasty, restored the Bulgarian state to form the Second Bulgarian Empire. After reaching its apogee in the 1230s, Bulgaria started to decline due to a number of factors, most notably its geographic position which rendered it vulnerable to simultaneous attacks and invasions from many sides. A peasant rebellion, one of the few successful such in history, established the swineherd Ivaylo as a Tsar. His short reign was essential in recovering—at least partially—the integrity of the Bulgarian state. A relatively thriving period followed after 1300, but ended in 1371, when factional divisions caused Bulgaria to split into three small Tsardoms. By 1396, they were subjugated by the Ottoman Empire. The Turks eliminated the Bulgarian system of nobility and ruling clergy, and Bulgaria remained an integral Ottoman Empire territory for the next 500 years.
With the decline of the Ottoman Empire after 1700, signs of revival started to emerge. The Bulgarian nobility had vanished, leaving an egalitarian peasant society with a small but growing urban middle class. By the 19th century, the Bulgarian National Revival became a key component of the struggle for independence, which would culminate in the failed April uprising in 1876, which prompted the Russo-Turkish War of 1877–78 and the subsequent Liberation of Bulgaria. The initial Treaty of San Stefano was rejected by the Great Powers, and the following Treaty of Berlin limited Bulgaria's territories to Moesia and the region of Sofia. This left many ethnic Bulgarians out of the borders of the new state, which defined Bulgaria's militaristic approach to regional affairs and its allegiance to Germany in both World Wars.
After World War II, Bulgaria became a Communist state, and the General Secretary of the Bulgarian Communist Party, Todor Zhivkov, served for a period of 35 years, where there was relatively rapid economic growth. The Communist system collapsed in the 1980s, and several problems in the 1990s decreased the economic development of Bulgaria's agricultural and other industries. A period of relative stabilization began with the election of Simeon Saxe-Coburg-Gotha as prime minister in 2001. Bulgaria joined NATO in 2004 and the European Union in 2007.
Prehistory.
The earliest human remains found in Bulgaria were excavated in the Kozarnika cave, with an approximate age of 1,6 million BC. This cave probably keeps the earliest evidence of human symbolic behaviour ever found. A fragmented pair of human jaws, which are 44,000 years old, were found in Bacho Kiro cave, but it is disputed whether these early humans were in fact Homo sapiens or Neanderthals.
The earliest dwellings in Bulgaria – the Stara Zagora Neolithic dwellings – date from 6,000 BC and are amongst the oldest human-made structures yet discovered. By the end of the neolithic, the Karanovo, Hamangia and Vinča cultures developed on what is today Bulgaria, southern Romania and eastern Serbia. The earliest known town in Europe, Solnitsata, was located in present-day Bulgaria. The Durankulak lake settlement in Bulgaria commenced on a small island, approximately 7000 BC and around 4700/4600 BC the stone architecture was already in general use and became a characteristic phenomenon that was unique in Europe.
The eneolithic Varna culture (5000 BC) represents the first civilization with a sophisticated social hierarchy in Europe. The centrepiece of this culture is the Varna Necropolis, discovered in the early 1970s. It serves as a tool in understanding how the earliest European societies functioned, principally through well-preserved ritual burials, pottery, and golden jewellery. The golden rings, bracelets and ceremonial weapons discovered in one of the graves were created between 4,600 and 4200 BC, which makes them the oldest gold artefacts yet discovered anywhere in the world.
Some of the earliest evidence of grape cultivation and livestock domestication is associated with the Bronze Age Ezero culture. The Magura Cave drawings date from the same era, although the exact years of their creation cannot be pin-pointed.
Antiquity.
The Thracians.
The first people to leave lasting traces and cultural heritage throughout the region were the Thracians. Their origin remains obscure. It is generally proposed that a proto-Thracian people developed from a mixture of indigenous peoples and Indo-Europeans from the time of Proto-Indo-European expansion in the Early Bronze Age when the latter, around 1500 BC, conquered the indigenous peoples. Thracian craftsmen inherited the skills of the indigenous civilisations before them, especially in gold working.
The Thracians were generally disorganized, but had an advanced culture despite the lack of their own proper script, and gathered powerful military forces when their divided tribes formed unions under the pressure of external threats. They formed the Odrysian kingdom Although the concept of an urban center was not developed until the Roman period, various larger fortifications which also served as regional market centers were numerous. Yet, in general, despite Greek colonization in such areas as Byzantium, Apollonia and other cities, the Thracians avoided urban life.
The first Greek colonies in Thrace were founded in the 8th century BC.
Achaemenid Persian invasions.
Ever since the Macedonian king Amyntas I surrendered his country to the Persians in about 512-511 BC, Macedonians and Persians were strangers no more. Subjugation of Macedonia was part of Persian military operations initiated by Darius the Great (521–486 BC). In 513 BC - after immense preparations - a huge Achaemenid army invaded the Balkans and tried to defeat the European Scythians roaming to the north of the Danube river. Darius' army subjugated several Thracian peoples, and virtually all other regions that touch the European part of the Black Sea, such as parts of nowadays Bulgaria, Romania, Ukraine, and Russia, before it returned to Asia Minor. Darius left in Europe one of his commanders named Megabazus whose task was to accomplish conquests in the Balkans. The Persian troops subjugated gold-rich Thrace, the coastal Greek cities, as well as defeating and conquering the powerful Paeonians. Finally, Megabazus sent envoys to Amyntas, demanding acceptation of Persian domination, which the Macedonians accepted. Following the Ionian Revolt, the Persian hold over the Balkans loosened, but was firmly restored in 492 BC through the campaigns of Mardonius. The Balkans, including what is nowadays Bulgaria, provided many soldiers for the multi-ethnic Achaemenid army. Several Thracian treasures dating from the Persian rule in Bulgaria have been found. Most of what is today eastern Bulgaria remained firmly under the Persian sway until 479 BC. The Persian garrison at Doriscus in Thrace held out for many years even after the Persian defeat, and reportedly never surrendered. It remained as the last Persian stronghold in Europe.
Thracian Odrysian kingdom (c. 480 BC - 30 BC).
Thracian tribes remained divided and most of them fell under nominal Persian rule from the late 6th century until the first half of the 5th century, until King Teres united most of them under the Odrysian kingdom around 470 BC, probably after the Persian defeat in Greece which later peaked under the leadership of King Sitalces (431–424 BC) and of Cotys I (383–359 BC). This Thracian kingdom thrived between the early 5th century BC and the early 3rd / late 1st century BC. Located in present-day Bulgaria, southeastern Romania (northern Dobruja), northeastern Greece and European Turkey, it was a tribal amalgam dominated by the Odrysians that was the first large political entity to develop in the eastern Balkans. Before the foundation of Seuthopolis in the late 4th century it had no fixed capital. Similar to the Gauls and other Celtic tribes, most Thracians are thought to have lived simply in small fortified villages, usually on hilltops. At the commencement of the Peloponnesian war, Sitalces entered into alliance with the Athenians, and in 429 BC he invaded Macedon (then ruled by Perdiccas II) with a vast army that included 150,000 warriors from independent Thracian tribes. Cotys I on the other hand, went to war with the Athenians for the possession of the Thracian Chersonese.
Ancient Macedon invasions.
Thereafter the Macedonian Empire incorporated the Odrysian kingdom and Thracians became an inalienable component in the extra-continental expeditions of both Philip II and Alexander III (the Great).
Ancient Celtic invasions.
In 298 BC, Celtic tribes reached what is today Bulgaria and clashed with the forces of Macedonian king Cassander on Mount Haemos (Stara Planina). The Macedonians won the battle, but that did not stop the Celtic advancement. Many Thracian communities, weakened by the Macedonian occupation, fell under Celtic dominance.
In 279 BC, one of the Celtic armies, led by Comontorius, attacked Thrace and succeeded in conquering it. Comontorius established the kingdom of Tylis in what is now eastern Bulgaria. The modern-day village of Tulovo bears the name of the relatively short-lived kingdom. Cultural interactions between Thracians and Celts are evidenced by several items containing elements of both cultures, such as the chariot of Mezek and almost certainly the Gundestrup cauldron.
Tylis lasted until 212 BC, when the Thracians managed to regain their dominant position in the region and disbanded it. Small bands of Celts survived in Western Bulgaria. One such tribe were the "serdi", from which "Serdica" - the ancient name of Sofia - originates. Even though the Celts remained in the Balkans for more than a century, their influence on the peninsula was modest. By the end of the 3rd century, a new threat appeared for the people of the Thracian region in the shape of the Roman Empire.
Roman period.
In 188 BC, the Romans invaded Thrace, and warfare continued until 46 AD when Rome finally conquered the region.
Sapaean Thracian kingdom (Roman vassal state) (1st century BC - 46 AD).
The Sapaean kingdom was an ancient Thracian state in the southeastern Balkans that existed from the middle of the 1st century BC until 46 AD. Succeeding the Classical and Hellenistic era Odrysian kingdom of Thrace, it was dominated by the Sapaean tribe, who ruled from their capital Bizye in what is now northwestern Turkey. Initially only of limited relevance, its power grew significantly in the ancient Roman world as a client state of the late Roman Republic. After the Battle of Actium in 31 BC, Octavian (later emperor Augustus) installed a new dynasty that proved to