Which two groups were involved in the confrontations known as bleeding kansas?

Abolitionist John Brown led anti-slavery champions in Kansas before his famed attack on Harper's Ferry. Supposed to have been manufactured by Horace Greeley's New York Tribune, the label “Bleeding Kansas” was leading retaliated on that strife-ridden township by antislavery publicize-rs. Bleeding Kansas, the inadequate civil conflict in the United States, supported within pro slavery and antislavery advocates for the administration of the new township of Kansas under the principle of democratic supremacy.

a is true because it know the force.

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