Question: John D. "Colonel Jack" Henderson was a Colonel in the Border Wars of Bleeding Kansas, a series of violent political confrontations in the United States between what years?
Sentence (from "Battle of Osawatomie"): The Battle of Osawatomie took place on August 30, 1856 when 250-400 Border Ruffians led by John W. Reid attacked the town of Osawatomie.
Relevant evidence: No