Aussa, Sultanate of
State | Defunct
1734 CE to 1936 CE
The Sultanate of Aussa was a kingdom that existed in the Afar Region in southern Eritrea, eastern Ethiopia and Djibouti from the 18th to the 20th century. It was considered to be the leading monarchy of the Afar people, to whom the other Afar rulers nominally acknowledged primacy.
The Ethiopian Empire nominally laid claim to the region but were met with harsh resistance. Due to their skills in desert warfare, the Afars managed to remain independent, unlike other similar groups in the region.
The Sultan Yayyo visited Rome along with countless other nobility from across East Africa to support the creation of Italian East Africa.
This marked the end of the region's independence and it was disestablished and incorporated into Italian East Africa as a part of the Eritrean Governorate and the Harar Governorate.
Related Events
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Interior East Africa (1732–1743 CE): Consolidation of Regional Power and Declining Imperial Authority
Between 1732 and 1743, Interior East Africa witnessed a continuation of the Ethiopian Empire’s progressive fragmentation, signaling the deepening of Ethiopia’s Zemene Mesafint ("Age of Princes"). Following the death of Emperor Bakaffa in 1730, his successor, Iyasu II (r. 1730–1755), ascended the throne as a child, leaving real power in the hands of his mother, Empress Mentewab, and influential regional nobility. Mentewab, acting as regent, struggled to manage competing provincial factions and maintain cohesion within the empire.
Increasingly autonomous nobles began openly challenging imperial authority, managing their territories independently and engaging in periodic conflicts. These nobles, wielding significant military and economic resources, emerged as powerful regional figures, essentially acting as independent princes. Notably, figures like Ras Mikael Sehul of Tigray started rising to prominence, demonstrating the weakening hold of Gondar’s central authority.
Meanwhile, in the Afar lowlands to the east, the Imamate of Aussa gave way fully by 1734 to the establishment of the Sultanate of Aussa under Sultan Kedafu. Kedafu successfully consolidated power among rival Afar clans and established a more stable polity, which controlled the strategic trade routes linking the highlands to the Red Sea coast. This transition not only marked the reconfiguration of regional power but also highlighted the fragmentation of authority that would characterize Interior East Africa for much of the eighteenth century.
Thus, by 1743, the Ethiopian Empire stood at a crossroads: weakened central authority in Gondar persisted alongside the rising autonomy of regional rulers, setting the stage for further decentralization and conflicts that would dominate Ethiopian politics in the decades to come.
Interior East Africa (1744–1755 CE): Deepening Fragmentation and Dynastic Decline
The reign of Emperor Iyasu II (1730–1755) brought Ethiopia closer to full political fragmentation, continuing a prolonged decline of central imperial authority. Iyasu II, who ascended the throne as a child, allowed his mother, Empress Mentewab, to exercise significant control, serving as his regent and eventually crowning herself as co-ruler—an unprecedented event in Ethiopian history. Mentewab's influence, though stabilizing initially, was insufficient to arrest Ethiopia’s broader internal decline.
By the mid-18th century, Ethiopia’s empire faced acute internal conflict marked by ethnic tensions and regional rivalries. Established groups like the Agaw, Amhara, Shewan, and Tigrayan elites struggled against each other and confronted the continuing encroachment of the Oromo people. The Oromo, who had penetrated deeply into the central highlands over previous decades, now played a crucial and increasingly autonomous role in the political landscape.
The authority of Gondar’s monarchy weakened dramatically as regional rulers, many now entirely independent in practice, continued to build power bases in their own territories. Prominent among these was the increasingly influential figure Ras Mikael Sehul of Tigray, who emerged as a decisive power-broker in northern Ethiopia.
By the end of this era, Ethiopia was firmly entrenched in the dynamics that would characterize the Zemene Mesafint ("Age of Princes"): persistent instability, shifting allegiances, and diminished central control, laying the foundations for further decentralization and prolonged internal conflict.
Interior East Africa (1756–1767 CE): Intensifying Dynastic Rivalry and Rise of Regional Powers
The era from 1756 to 1767 saw deepening tensions within the Ethiopian Empire, stemming largely from Empress Mentewab's earlier political strategies and the subsequent rivalry between powerful royal factions. Mentewab’s attempt to secure stronger political ties with the influential Oromo by arranging the marriage of her son, Emperor Iyasu II, to the daughter of an Oromo chieftain from Yejju ultimately intensified internal divisions rather than promoting unity.
After Iyasu II’s death in 1755, Mentewab tried to continue exercising influence as regent for her grandson, Emperor Iyoas (r. 1755–1769). However, she encountered fierce opposition from Wubit (Welete Bersabe), the widow of Iyasu II and Iyoas’s mother, who believed that she was entitled to the role of regent. Emperor Iyoas himself exacerbated tensions among the empire’s Amhara aristocracy by favoring his Oromo Yejju relatives, speaking Oromo in court, and openly displaying a preference for Oromo customs over traditional Amhara ways.
The clash between Mentewab’s supporters, primarily drawn from the Qwara nobility, and Wubit’s Oromo relatives from Yejju threatened to plunge the empire into armed conflict. In an attempt to avert civil war, the nobility appealed to the influential Ras Mikael Sehul of Tigray for mediation. However, Ras Mikael used the situation shrewdly to his advantage, outmaneuvering both queens and their factions, effectively positioning himself as a key power-broker. By sidelining both Mentewab and Wubit, Ras Mikael Sehul consolidated his dominance, emerging as the leading figure within the Christian Amhara-Tigrean elite.
These developments accelerated Ethiopia's descent into the Zemene Mesafint ("Age of Princes"), characterized by decentralized rule, weakened imperial authority, and increased autonomy for regional warlords.