About: http://webisa.webdatacommons.org/221891105

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	By some 200 years later they were within the forest.Active trade was carried on with the Sudan, kingdoms west of the Volta dealing mainly with Ghana and Mali and those to the east with the Hausa states and Kanem-Bornu.
http://www.w3.org/ns/prov#wasQuotedFrom	howstuffworks.com