About: http://webisa.webdatacommons.org/125568329

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	To the north, the Sahara was a formidable obstacle, both geographically and politically, as it was controlled by Arabs and other Muslims who were hostile to Christian Europeans.
http://www.w3.org/ns/prov#wasQuotedFrom	unc.edu