About: http://webisa.webdatacommons.org/239820211

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	It considers voluntary migrations, slavery, and the impact of modern technologies such as steam and flight.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com