Assertion: republican party | /r/CapableOf | trace its roots
Facets:
value: to the 1850s
type: TEMPORAL
Source sentences:
text: The Republican Party traces its roots to the 1850s, when antislavery leaders (including former members of the Democratic, Whig, and Free-Soil parties) joined forces to oppose the extension of slavery into the Kansas and Nebraska territories by the proposed Kansas-Nebraska Act.