How did the Asante kingdom use its access to gold to begin its growth and development?

The Asante Kingdom used gold as the main source of trade with the Europeans, especially Britain, and during the 1700s to 1800s, they unified the chiefdoms to be one kingdom. The Asantehene, or Supreme Chief, decided that the gold dust would be the official coin, and all the Asantes used the precious metal to adorn themselves, even the poorest possessed the gold. The Europeans traded with the Asante, but when trading weapons in exchange for gold, they caused wars of expansion of the new Asante empire, which in addition to 1800, besides gold, imported many slaves. At the end of 1800 the British ended up making a colony that region, called Costa del Oro.