Assertion: slave's plantation | /r/HasProperty | depend on large force of slave labor
Facets:
value: to cultivate the crop
type: PURPOSE
Source sentences:
text: These plantations depended on a large force of slave labor to cultivate and harvest the crop—most white farmers in the 19th century wanted and were able to obtain their own farms as the U.S. expanded south and west, and slaves not only provided a labor source that couldn’t resign or demand higher wages, their progeny insured that labor source would continue for generations.