History of West Africa more states. Early human settlers arrived in West Africa around 12,000 BCE. In the fifth millennium, as the ancestors of modern West Africans began entering the area, the development of sedentary farming began to take place in West Africa. The Iron industry, in both smelting and forging for tools and weapons, appeared in Sub-Saharan Africa by 1200 BCE, and by 400 BCE, contact had been made with the Mediterranean civilizations, and a regular trade included exporting gold, cotton, metal, and leather in exchange for copper, horses, salt, textiles, and beads. Culture developed further with the Nok culture (1000 BCE to
History of West Africa archaeological excavations mainly by Susan and Roderick McIntosh, the site is known to have been occupied from 250 B.C. to 900 A.D. The city is believed to have been abandoned and moved where the current city is located due to the spread of Islam and the building of the Great Mosque of Djenné. Previously, it was assumed that advanced trade networks and complex societies did not exist in the region until the arrival of traders from Southwest Asia. However, sites such as Djenné-Djenno disprove this, as these traditions in West Africa flourished long before. In central Nigeria, around 1000 BCE,