The First Bulgarian Empire (681–1018 CE) was one of the key medieval powers of Southeast Europe. From its foundation north of the Balkan Mountains to its peak as a major rival of the Byzantine Empire, it shaped political borders, statecraft, and—crucially—Slavic Christian culture. Over time, the early Bulgar ruling elite and the Slavic majority merged into a unified medieval Bulgarian people, while Bulgaria became a major transmitter of the Slavonic liturgy and the Cyrillic written tradition across Eastern Europe.
Formation and Early Expansion
The roots of the First Bulgarian Empire lie in the 7th century, when Khan Asparuh led one Bulgar group across the Danube into the lands north of the Balkan Mountains. The ethnogenesis of the Bulgars remains a subject of debate in scholarship (including questions of deeper origins and linguistic background), but sources agree that they were a steppe warrior society organized under khans and nobles (boyars).
In 680–681, after a Byzantine campaign against Asparuh failed, Byzantium recognized, by treaty, Bulgar control of the region between the Danube and the Balkan Mountains—an act widely regarded as the formal starting point of the Bulgarian state.
Early political centers formed at Pliska (a major fortified court and administrative hub) and at nearby Madara (a significant sacred center in the early period). Archaeological evidence suggests that early Bulgar and Slavic settlements initially remained distinct, while the ruling structure extracted tribute and organized defense and expansion.
Military Expansion and Consolidation of Power
Relations with Byzantium fluctuated between truces and conflict, but Bulgaria steadily expanded its influence and territory across the Balkans. Under Tervel, Bulgaria played an active role in Byzantine dynastic politics; Byzantine sources record that he helped restore Emperor Justinian II and that he received the title of caesar in return.
A major leap in power came under Krum (r. 803–814). In 811, a Byzantine expedition ended disastrously for Byzantium; Emperor Nikephoros I was killed, and later narrative tradition preserved the dramatic motif of his skull being turned into a drinking cup—an episode that illustrates how total the shock of the defeat was in medieval memory.
After Krum, Bulgaria entered a period of stability and consolidation, interspersed with periodic wars, and expanded into parts of Macedonia and neighboring regions. Rulers of the 9th century also invested heavily in monumental construction and state infrastructure—signs of a maturing, administratively capable polity rather than merely a raiding confederation.
Adoption of Christianity (864 CE)
The reign of Boris I marked a decisive turn. In 864, Boris was baptized, bringing Bulgaria into the Christian world at a moment when competition between Rome and Constantinople over ecclesiastical authority was intense. Boris leveraged that rivalry to secure greater independence for Bulgaria’s church life rather than simple subordination to Constantinople.
A scholarly synthesis of the evidence notes that a Bulgarian archbishopric was founded in 870 and that it attained recognized autocephaly in connection with late 9th-century church settlements (879–880). This church infrastructure quickly became central to Bulgaria’s cultural policy, education, and state integration.
Important correction to your current text:
The Bulgarian Church’s patriarchal dignity is tied to 927, when Byzantium recognized the patriarchal status of the head of the Bulgarian Church in the context of the 927 settlement—i.e., under Peter I, after Simeon’s death, not “under Tsar Simeon I.”
Cultural Development and the Cyrillic Script
Christianization quickly became a cultural revolution. Saints Cyril and Methodius created an alphabet for the Slavic language and advanced Slavic liturgy and translation. After their followers were expelled from Moravia, Bulgaria received them, thereby making it the principal center of Slavic literature and clerical training. Britannica notes that Clement of Ohrid and Naum of Preslav are credited with preparing thousands of clergy in Ohrid, an educational effort sometimes described as the earliest large Slavic training center.
A pivotal political-cultural decision followed: after Boris’s abdication and a failed attempt to restore paganism, Boris returned, deposed his son, convened a council, confirmed Christianity as the state religion, and transferred the administrative capital from Pliska to Preslav (Veliki Preslav).
In Bulgaria, during the late 9th to 10th centuries, the Cyrillic alphabet emerged as a new script for the Slavic language, strongly influenced by Greek letterforms and associated with the Bulgarian literary milieu (often linked to the Preslav tradition and the work of the Cyrillo-Methodian disciples).
Architectural Achievements
The First Bulgarian Empire left enduring monumental landscapes and urban forms.
- Pliska developed into an extensive fortified center with major palatial and ceremonial areas, later incorporating Christian monumental architecture following conversion.
- Preslav was reshaped into a symbolic and administrative capital, remembered for its elite architecture and artistic production (including distinctive ceramics and high-status church building).
- The Madara Rider, a unique cliff-carved relief, was associated with early state ideology: UNESCO describes it as Bulgaria’s principal sacred site before conversion and notes that its inscriptions record events between 705 and 801.
Rather than presenting these monuments as isolated “tourist highlights,” it’s more accurate to treat them as evidence of a state that invested in ideology, urban planning, and elite representation—key markers of imperial competition in the medieval Balkans.
Societal Development and Governance
Bulgaria’s internal evolution in the 8th–10th centuries is best described as state consolidation through integration: the gradual assimilation of the Bulgar elite into a Slavic-majority environment, accelerated by Christianity and the rise of a common written-liturgical culture. Britannica emphasizes that sources describing this process are limited, but that Christianity clearly provided a powerful basis for shared culture and centralized authority.
Urban hubs such as Pliska and Preslav functioned as administrative and cultural engines. The church and literary institutions did not merely “support identity”—they created durable systems for education, elite formation, and international diplomacy, and they positioned Bulgaria as a cultural exporter to other Slavic and Orthodox worlds.
First Bulgarian Empire Decline and Byzantine Conquest
After the high point under Simeon I, Bulgaria faced compounding pressures: internal dissension, the spread of Bogomilism, and repeated attacks and raids by multiple groups (including Magyars, Pechenegs, the Rus, and Byzantines). In the late 10th century, the capital Preslav was captured amid major conflicts; sources note a shift in political gravity toward Ohrid after its fall in 971.
The final phase is tied to the wars against Emperor Basil II. Britannica describes a decisive Byzantine victory in 1014 over Tsar Samuel, alongside the well-known (and often repeated) story that Basil blinded many captured soldiers—reported as “as many as 15,000”—before releasing them, and that the shock contributed to Samuel’s death. By 1018, Bulgaria lost independence and was incorporated into the Byzantine world.
Legacy of the First Bulgarian Empire
The legacy of the First Bulgarian Empire is not an abstract or idealized “golden past,” but a set of clearly identifiable historical achievements. It established a durable tradition of statehood in the Balkans, with a medieval Bulgarian political identity grounded in internationally recognized sovereignty dating back to 681. At the same time, Bulgaria emerged as a major center of the Slavonic Christian world, shaping liturgy, education, and written culture through the preservation of the Glagolitic heritage and the development of Cyrillic in a Bulgarian context. This legacy is also materially preserved in the monumental landscape of early medieval Bulgaria, above all in the complexes of Pliska, Madara, and Preslav, which remain essential for understanding state ideology, cultural production, and representations of power, including the UNESCO-recognized Madara Rider.
