About: http://webisa.webdatacommons.org/37622956

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	Increased food production, improved medicine and sanitation, and a decline in the virulence and frequency of pandemic diseases such as plague, explain why global death rates fell and life expectancies rose from 31 to 49 years.
http://www.w3.org/ns/prov#wasQuotedFrom	sdsu.edu