About: http://webisa.webdatacommons.org/155365426

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	The Spanish Nootka Convention of 1790 opened the northwest territory to explorers and trappers from other nations, most notably Britain and then the United States.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org