About: http://webisa.webdatacommons.org/433096588

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	Terms of this treaty required the Nubians to send 400 slaves per year to the Arabs, while the Arabs returned horses, cloth, and other goods.Nubia gave way to Islam in the 16th Century as the last Christian church was closed.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com