About: http://webisa.webdatacommons.org/192845269

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	This was due the Trans-Saharan trade between the northern parts of Nigeria and the western Sudan, Sahara, North Africa, Europe, the Nile Valley including Egypt and the Middle East.
http://www.w3.org/ns/prov#wasQuotedFrom	ccsu.edu