About: http://webisa.webdatacommons.org/278153576

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	I grouped the states into three groups: slave states in 1860, free states in 1860, and territories, also including AK and HI, even though these last two were not even territories in 1860 (they are empty cells anyway).
http://www.w3.org/ns/prov#wasQuotedFrom	democraticunderground.com