About: http://webisa.webdatacommons.org/299542739

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	Periodically these efforts were set back by wars, depressions, or other disasters.
http://www.w3.org/ns/prov#wasQuotedFrom	newamerica.net