About: http://webisa.webdatacommons.org/201709987

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	Archaeologists don???t have a de???nitive reason, and theories range from environmental factors such as drought and declining soil quality to social change.
http://www.w3.org/ns/prov#wasQuotedFrom	thesca.org