About: http://webisa.webdatacommons.org/135680496

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	These moves take place due to loss of subsistence agriculture, thefts of land, and population increases.In many ancient cultures, persons (often including their family) convicted of serious crimes could be sold into slavery.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com