About: http://webisa.webdatacommons.org/129081044

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	Slavery, however, which was used mainly for agriculture and ended nearly a century and a half ago, was not a key factor in America???s becoming the world???s most powerful nation
http://www.w3.org/ns/prov#wasQuotedFrom	pekingduck.org