The origins of Aboh, are told both in oral traditions and historical analysis by various historians. According to the oral history, Aboh trace some of its origins to a migration from the
Benin Kingdom, a multi-ethnic society, which was in the midst of
civil war, and shares this oral history similarities to that of
Onitsha, whose own ancestors departed from Benin under their king Ezechima. Other parts of its origin draw connections with the spiritual institutions and practices of
Nri, including the ozo staff of which the Obi possessed the ofo nze office staff, the Igbo religion of
Odinala and the ndichie. Therefore, it is speculated that due to proximity to Benin, and its political influence on its neighbours, that the Kingdom of Aboh developed its centralized political structure, which was a rarity among its neighbours in the
Niger Delta. Aboh reached its prominence during the 18-19th century where it grew in political and military strength due to its strategic position along
navigable waterways, which made it a hub of trade along the Niger Delta, and allowing it to exert influence over inland and coastal trade. During its height, the kingdom extended its authority over territories across the western half of the Niger Delta, including large sections of modern-day Delta and the riverine states of eastern
Igboland, of which these towns would pay tribute to the Obi. The expansion of the kingdom's power led to kings of other groups in the Western Delta to seek favour from the Obi, in recognition of the prestige of his rulership. Aboh Kingdom was headed by the Obi, or King, who was supported by a council of titled chiefs and elders who represented lineages and administrative units within the kingdom. Unlike most
Igbo east of the Niger, Aboh was a highly centralized polity, with the institute of government being "Izu Olinzele" or, "society of titled men", with the Obi and the Oduah, the elder statesman, at the top of the hierarchy. Military strength was also a central to Aboh's dominance over trade, with its
navy, consisting of war canoes, which played a critical role in its regional dominance and protection of trade routes, and from where its rivalry with the neighboring
Igala Kingdom sparked, in their competition of trade. Aboh had relations between other kingdoms along the Niger, specifically in regard to trade and warfare, but its relationship with its northern neighbour
Igala were complex, involving both trade and conflict. Igala had long been the main beneficiary of the
Niger River trade owing to the position of its capital Idah on the confluence of the Niger, which transformed it into a regional power, had by the 19th century been overtaken by Aboh, emerging as the foremost military and commercial power in the Lower Niger. Olisa, who was also renowned as a great warrior and trader, akin to Aje, was also a contender for the throne, as a descendant of Obi Ojugbali I. In the early period of the interregna, Aje appeared to have taken an early lead in the race in attaining the Obiship, as he was in control of all foreign policy and warlike affairs, Baikie noting that he was much favored to be elected king of Aboh. Internally, the effects of this prolonged dispute over the next Obi, resulted in Aje refusing to participate in military campaigns of expansion, and externally, the lack of central power had led to many towns previously subject to Aboh ceasing to pay tribute, becoming independent. Ajayi Crowther who visited Aboh in 1857, stated that each of the competitors for the Obiship had become “masters of their own quarters”, with both Aje and Olisa building palaces for themselves as displays of their authority. In Aboh, 60 electors wielded considerable amount of political influence as individuals without whose support none of the contestants could ever become the Obi. The electors in some cases exerted a powerful influence, and contestants, as in the competition after the death of Obi Osai I, Aje and Olisa had incurred heavy expenses in trying to gain their support, which muddled the political scenery in Aboh. Aboh central authority during the interregnum therefore diffused among the competing princes, wealthy individuals, and elector office-holders. Further complicating issues was that while these chiefs and electors for their own gain, could put the selection of a king on hold, they however, had no command of the force with which to back up their decision, and a powerful sectional "chief" or contestant could disregard their ruling with impunity. Eventually, the 18 year interregnum came to an end following the death of Aje in 1862, in which Olisa would be crowned the new Obi of Aboh. ==Structure==