The Five Dynasties and Ten Kingdoms is a period of political upheaval in China, beginning in the Tang Dynasty and ending in the Song Dynasty.

During this period, five dynasties quickly succeed one another in the North, and more than a dozen independent states are established, mainly in the South.

However, only ten are traditionally listed, hence the era's name, "Ten Kingdoms."

Some historians, such as Bo Yang, count eleven, including Yan and Qi, but not Northern Han, viewing it as simply a continuation of Later Han.

Eastern Southeast Europe (904–915 CE): Renewed Byzantine Pressures and Bulgarian Dominance

Settlement and Migration Patterns

Stability and Integration

Between 904 and 915 CE, Eastern Southeast Europe maintained relative demographic stability, continuing the integration and consolidation of diverse populations such as Bulgarians, Slavs, and Daco-Romans.

Political and Military Developments

Byzantine Military Initiatives

This period saw renewed military pressures from the Byzantine Empire aimed at reclaiming lost territories and reasserting control over critical regions. These initiatives resulted in increased tensions and intermittent clashes along the Byzantine-Bulgarian frontiers. Notably, the imperial stronghold of Adrianople fell to the expanding Bulgarian Empire, significantly altering regional military dynamics.

Bulgarian Consolidation and Regional Dominance

Under the continued leadership of Tsar Simeon I, Bulgaria reinforced its regional dominance, successfully defending its expanded territory and maintaining significant political leverage over the Byzantine Empire. The annual tribute paid by Constantinople reinforced Bulgaria's strengthened political position.

Serbian Positioning

The Serbian principality continued its consolidation process, cautiously navigating between Byzantine and Bulgarian influences. This delicate political balancing act enabled Serbia to strengthen its internal structures and regional significance gradually.

Role of the Paulicians

The Paulicians gained increased importance in Thrace, where many had been forcibly relocated by the Byzantine authorities to serve as a frontier force against Bulgarian advances. Their presence further highlighted the strategic defensive measures employed by the empire during this period.

Economic and Technological Developments

Economic Resilience

The regional economy continued its resilience, driven by sustained agricultural productivity, robust trade networks, and stable infrastructure. Trade activities, particularly those involving the Italian maritime republics, played a pivotal role in supporting regional economic stability.

Defensive Enhancements

Military fortifications and defensive strategies continued to evolve, reflecting ongoing geopolitical tensions. Both Bulgarian and Byzantine territories saw significant investments in defensive capabilities to secure borders and protect economic interests.

Cultural and Artistic Developments

Continued Cultural Flourishing

Artistic and cultural activities thrived during this period, supported by sustained stability and regional prosperity. Byzantine and Bulgarian artistic expressions continued to evolve, reflecting broader cultural exchanges and influences.

Scholarly and Literary Expansion

Educational institutions and scriptoria experienced further growth, reinforcing cultural continuity and intellectual resilience. The ongoing production of manuscripts and literary works contributed significantly to regional cultural heritage.

Social and Religious Developments

Strengthening of Orthodox Christianity

Eastern Orthodox Christianity continued to significantly influence societal structures, shaping cultural identity and community cohesion. Religious institutions played a vital role in regional stability and cultural unity.

Ecclesiastical Stability

Despite earlier ecclesiastical tensions, relations between Eastern and Western Christian institutions remained stable during this period. The continued influence of Eastern Orthodoxy facilitated ongoing religious harmony and social integration across the region.

Long-Term Consequences and Historical Significance

The period from 904 to 915 CE was characterized by renewed Byzantine military initiatives, continued Bulgarian dominance, and sustained regional stability. These developments significantly shaped the geopolitical dynamics and cultural landscape of Eastern Southeast Europe, laying the groundwork for future historical trajectories and enduring regional influences.

The imperial stronghold of Adrianople falls to the expanding Bulgarian Empire.

The importance of the Paulicians after the ninth century lies chiefly in Thrace, where many of them have been forcibly located to serve as a frontier force against the Bulgarians.

The Middle East: 904–915 CE

Fragmentation of Abbasid Authority and the Rise of Regional Powers

From 904 to 915 CE, the Abbasid Caliphate faces an accelerating decline of central authority, evident through the growing autonomy and influence of ambitious provincial governors and military commanders. The Abbasid caliphs, increasingly confined to ceremonial roles in Baghdad, see their practical power diminish significantly.

Emergence of Local Dynasties

Local and regional dynasties solidify their control throughout the empire. The Saffarids, having displaced the Tahirids in eastern Iran, consolidate their power by 873 and assert continued dominance during this period. Additionally, Mesopotamia sees the rise of various regional rulers, further fragmenting the caliphate’s once-unified territories.

Revolt and Rebellion

In Bahrain, which encompasses significant portions of eastern Arabia, the Qarmatians under Abu Sa'id al-Hasan al-Jannabi fortify their hold following their earlier capture of the capital Hajr and al-Hasa in 899 CE. Al-Jannabi continues to establish his revolutionary republic based on utopian ideals, significantly disrupting Abbasid control in the region.

Intellectual and Cultural Flourishing

Despite political fragmentation, intellectual and cultural advancements persist. The Persian geographer Ahmad ibn Rustah compiles his detailed geographic compendium, the Book of Precious Records, providing valuable first-hand descriptions of his native Isfahan and insights into regions as distant as Europe and Inner Asia.

The esteemed Persian physician Agha Bakr Muhammad ibn Zakariya al-Razi (al-Razi) continues to advance medical knowledge from his school in Baghdad, advocating opium use in anesthesia and melancholy treatment, reflecting continued innovation within Islamic medical traditions.

Religious and Linguistic Transformations

The Jewish philosopher and theologian Saadia Gaon remains active as head of the Talmudic academy of Sura, vigorously debating religious interpretations and authoring significant commentaries, notably on mystical texts such as the Sefer Yetzira. These writings greatly influence Jewish mystical thought, especially regarding the concept of the sefirot.

Linguistically, the transition from Middle Iranian languages to Modern Iranian continues, marked by a shift toward more rigid grammatical structures and syntax.

Kurdish Identity and Cultural Shifts

The identity of the "Kurds" becomes clearer in early Islamic sources, though still primarily described by their nomadic and pastoral lifestyle rather than as a distinct linguistic group. They emerge as a significant presence in the social and political dynamics of the region.

Thus, this era encapsulates both the fragmentation of Abbasid political authority and ongoing cultural and intellectual vitality across the Middle East.

The Muslim Arabs control most of northwest India by 900.

Unlike previous settlers in India, the Muslim immigrants are not absorbed into Hindu society.

The millions of Hindus who had been converted to Islam augment their ranks.

Although there is cultural interchange between Hindu and Muslim, no homogeneity emerges.

The significant and permanent military movement of Muslims into North India is accomplished by a Turkish dynasty that arises indirectly from the ruins of the 'Abbasid caliphate.

The establishment of Turkish power in India is initially tied up with politics in the Punjab.

The Punjab is ruled by Jayapala of the Hindu Shahiya dynasty, which had in the ninth century wrested the Kabul Valley and Gandhara from a Turkish Shahiya.

Political and economic relations are extremely close between the Punjab and Afghanistan.

Afghanistan in turn is closely involved with Central Asian politics.

Arab corsairs carry away some twenty thousand inhabitants of Thessalonica, the second city of the Empire, into slavery in North Africa and Crete.

Mediterranean Southwest Europe (904–915 CE): Saeculum Obscurum and Papal Corruption

The era 904–915 CE in Mediterranean Southwest Europe is notably characterized by the beginning of the Saeculum obscurum ("Dark Age") in papal history, alongside continued political complexity and cultural dynamism in the region.

Saeculum Obscurum in the Papacy

The period beginning in 904 CE, marked by the installation of Pope Sergius III, initiates the infamous Saeculum obscurum, a sixty-year phase in which the papacy falls under significant influence from the powerful and corrupt aristocratic Roman family known as the Theophylacti and their relatives. This era, characterized by widespread corruption, nepotism, and political manipulation, profoundly undermines papal prestige and spiritual authority, with repercussions extending throughout Christendom.

Continued Political Fragmentation in Italy

Italy remains politically fragmented, with local aristocratic families gaining prominence amid weakened Carolingian imperial authority. The compromised papacy, deeply entangled with aristocratic factions, contributes further to this political decentralization, reducing Rome's ability to assert coherent leadership across the Italian territories.

Internal Turmoil and Regional Autonomy in Al-Andalus

In Al-Andalus, Emir Abdallah ibn Muhammad (r. 888–912 CE) continues struggling with internal conflicts, rebellions, and regional autonomy. Powerful local families and governors retain semi-independent status, intensifying the decentralization and weakening the central Umayyad authority in Córdoba, although cultural and intellectual activity remains vibrant.

Mozarab and Jewish Cultural Resilience

Mozarab and Jewish communities persist in their cultural vitality, maintaining significant roles in urban life, scholarship, and commerce. Lucena, in particular, remains a leading Jewish intellectual center, continuing its rich scholarly tradition and fostering intercultural exchange.

Economic Stability and Technological Advances

Economic activity remains robust, supported by sustained technological innovations like the Catalan forge, which significantly enhance iron production. These developments underpin continued agricultural productivity, military effectiveness, and urban prosperity across Mediterranean Southwest Europe.

Legacy of the Era

The era 904–915 CE marks a dark chapter in papal history, overshadowed by the influence of the Theophylacti family, but simultaneously exhibits continued cultural resilience and economic stability throughout the region. These dynamics reflect the complexity of Mediterranean Southwest Europe's transition toward the central medieval period.

Saeculum obscurum (Latin: the Dark Age) is a name given to a period in the history of the Papacy during the first half of the tenth century, beginning in 904 with the installation of Pope Sergius III; it will last for sixty years until the death of Pope John XII in 964.

During this period, the Popes are influenced strongly by a powerful and corrupt aristocratic family, the Theophylacti, and their relatives.

North Africa (904–915 CE)

Fatimid Ascendancy, Aghlabid Collapse, and Regional Realignment

Between 904 and 915 CE, North Africa undergoes profound political realignment, marked by the collapse of the longstanding Aghlabid Dynasty, the decisive rise of the Fatimid Caliphate, and intensified fragmentation within the Idrisid Dynasty.

In Ifriqiya, the Fatimid movement, driven by Ismaili Shia missionaries among the Kutama Berbers, reaches a climactic point. The influential preacher Abu Abdallah al-Shi'i leads the Kutama Berbers in decisive campaigns against the weakened Sunni Aghlabids, rapidly consolidating their control over significant territories. By 909 CE, the Kutama-led forces seize Kairouan (Al Qayrawan), effectively ending Aghlabid rule. In the aftermath, the Ismaili leader from Syria, Ubaydallah al-Mahdi Billah, is installed as imam and caliph. Declaring himself caliph, Ubaydallah establishes the strategically and economically significant city of Mahdia as his new capital, formally inaugurating the Fatimid Dynasty, named after Fatima, daughter of Muhammad and wife of Ali, from whom the imam claims descent.

The establishment of the Fatimid state profoundly reshapes North African politics. With the conquest of Tahert (modern Tiaret) and the displacement of the Ibadi Rustamid Dynasty in 909 CE, the Fatimids replace the Ibadi Kharijite governance with centralized Shia rule, integrating this prosperous scholarly center into their expanding dominions.

In Morocco, the Idrisid Dynasty continues to experience intensified internal fragmentation, leading to the erosion of centralized political authority. Although Fez (Fès) remains a vibrant commercial and intellectual hub, emerging Berber entities such as the Miknasa and Maghrawa tribes further assert autonomy, capitalizing on Idrisid weaknesses.

Independent polities, including the coastal Barghawata confederation along Morocco’s Atlantic coast and the economically prosperous Emirate of Nekor in northern Morocco's Rif region, persist as robust centers of commerce and cultural interchange, benefiting from stable Mediterranean trade relations. Concurrently, the Saharan city-state of Sijilmasa, under the strategic oversight of influential Tuareg tribes, continues flourishing through lucrative trans-Saharan commerce.

By the conclusion of 915 CE, the regional order of North Africa is fundamentally transformed. The rise of the Fatimids represents a pivotal realignment, challenging established Sunni powers and setting the stage for further territorial expansion and political consolidation in the Maghreb and beyond.