Answer:Border ruffians were proslavery raiders
Step-by-step explanation:
crossing from the slave state of Missouri into the Kansas Territory, to help ensure Kansas entered the Union as a slave state. They were a key part of the violent period called Bleeding Kansas, that peaked from 1854 to 1858. Their crimes included fraudulent voting (falsely saying they were residents of Kansas), interference with elections, and raiding, intimidating, and destroying property of "Free-State" (anti-slavery) settlers. Some took pride in their criminal reputation. Many became pro-Confederate guerrillas, or bushwhackers.
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