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. During the 13th century, when the gold mines in modern-day Mali started to become depleted, Bonoman and later other Akan states began to rise to prominence as the major players in the gold trade. It was Bonoman that begat several Akan kingdoms like Mankessim, Denkyira, Akyem, Akwamu and others. Later, the Empire of Ashanti was founded. When and how the Ashante got to their present location is debatable. What is known is that by the 17th century an Akan people were identified as living in a state called Kwaaman. The location of the state was north of Lake Bosomtwe. The state's revenue was mainly derived from trading in gold and kola nuts and clearing forest to plant yams. They built towns between the Pra and Ofin rivers. They formed alliances for defence and paid tribute to Denkyira, one of the more powerful Akan states at that time along with Adansi and Akwamu. During the 16th century, Ashante society experienced sudden changes, including population growth because of cultivation of New World plants such as cassava and maize and an increase in the gold trade between the coast and the north. By the 17th century, Osei Kofi Tutu I (c. 1695–1717), with help of Okomfo Anokye, unified what became the Ashante into a confederation with the Golden Stool as a symbol of their unity and spirit. Osei Tutu engaged in a massive territorial expansion. He built up the Ashante army based on the Akan state of Akwamu, introducing new organisation and turning a disciplined militia into an effective fighting machine. In 1701, the Ashante conquered Denkyira, giving them access to the coastal trade with Europeans, especially the Dutch. Opoku Ware I (1720–1745) engaged in further expansion, adding other southern Akan states to the growing empire. He turned north adding Techiman, Banda, Gyaaman, and Gonja, states on the Black Volta. Between 1744 and 1745, Asantehene Opoku attacked the powerful northern state of Dagomba, gaining control of the important middle Niger trade routes. Kusi Obodom (1750–1764) succeeded Opoku. He solidified all the newly won territories. Osei Kwadwo (1777–1803) imposed administrative reforms that allowed the empire to be governed effectively and to continue its