|-||Incorporation into Ghana||1957|
Bonoman (Bono State) was a trading state created by the Abron people. Bonoman was a medieval Akan kingdom in what is now the Brong-Ahafo Region of Ghana and eastern Ivory Coast. It is generally accepted as the origin of the subgroups of the Akan people who migrated out of the state at various times to create new Akan states in search of gold. The gold trade, which started to boom in Bonoman as early in the 12th century, was the genesis of Akan power and wealth in the region, beginning in the Middle Ages.
Trading centers used by state 
Bono Manso 
Bono Manso (sometimes known as Bono Mansu) was a trading area in the ancient state of Bonoman, and a major trading center in what is now predominantly the Brong-Ahafo Region of Ghana. Located just south of the Black Volta river at the transitional zone between savanna and forest, the town was frequented by caravans from Djenné as part of the Trans-Saharan trade. Goods traded included kola nuts, salt, leather and gold; gold was the most important trading good of the area, starting in the mid-14th century.:334
Begho (also Bighu or Bitu; called Bew and Nsokɔ by the Akan) was an ancient trading town located just south of the Black Volta at the transitional zone between the forest and savanna (present-day Ghana, north-western Brong-Ahafo Region). The town, like Bono-Manso, was of considerable importance as an entrepot frequented by northern caravans from Mali from around 1100 AD. Goods traded included ivory, salt, leather, gold, kola nuts, cloth, and copper alloys.
Excavations have laid bare walled structures dated between 1350 and 1750 AD, as well as pottery of all kinds, smoking pipes, and evidence of iron smelting. With a probable population of over 10 000, Begho was one of the largest towns in the southern part of West Africa at the time of the arrival of the Portuguese in 1471.
Bonduku was another trading center within the empire of Bonoman. It gave birth to the state of Gyaman also spelled Jamang Kingdom. The state existed from 1450 to 1895 and was located in what is now Ghana and Côte d'Ivoire.
Structure of towns of Bonoman 
Based on excavations, carbon datings and local oral traditions, Effah-Gyamfi (1985) postulated three distinct urban phases. According to him, in the early phase (thirteenth to fifteenth century) the urban center was relatively small, and the towns were populated by thousands of people, not all living in the urban center. Buildings were made of daubted wattle. Painted pottery of this period was found distributed within a radius of 3.3 km.
In the second phase, sixteenth to seventeenth century, the urban centers was larger, consisting mainly of evenly distributed houses and a nuclear market center. Many indications of participation in long-distance trade, such as imported glass beads and mica coated pottery, stem from this period.
Influence on Akan culture 
Various aspects of Akan culture stem from Bonoman, including the umbrella used for the kings, the swords of the nation, the stools, goldsmithing, blacksmithing, Kente Cloth weaving and goldweighing.:30
Fall of Bonoman 
The fall of the various Abron states occurred during the rise of more powerful Akan empires, especially the all-powerful Ashanti empire. Several factors weakened these states, including conflicts among the leadership, conflicts due to taxation, and no direct access to the coast, where trade was helping many Akan states have more influence. By the late 19th century, all of Bonoman became part of the Asante Empire.
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