About: http://webisa.webdatacommons.org/148984924

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	After the Mexican War, the question of whether to allow or prohibit slavery in the new western territories threatened to rupture the Union.
http://www.w3.org/ns/prov#wasQuotedFrom	visitthecapitol.gov