Question: Who was killed during the Kansas Territory skirmish of November and December 1855?
Sentence (from "New England Emigrant Aid Company"): Thayer's prediction that the Company would eventually be able to send 20,000 immigrants a year never came to fruition, but it spurred Border Ruffians from nearby Missouri, where slavery was legal, to move to Kansas to ensure its admission to the Union as a slave state.
Relevant evidence: No