About: http://webisa.webdatacommons.org/222533899

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	Starting in the 18th century, nation-states increasingly used precious metals such as gold and silver to back their paper money, creating a monetary system called the gold standard.
http://www.w3.org/ns/prov#wasQuotedFrom	dupress.com