Answer: The Jutes
Explanation: One of the Germanic tribes that landed in the United Kingdom after the Romans departed
The Declaration of Independence, I believe :)
Bleeding Kansas (1855-1861) consisted of millions of dollars in property damage, and dozens dead, due to the onslaught of violence from pro-slavery Border Ruffians who clashed with Free-Staters (jayhawkers) on the matter of slavery. Eventually, this would lead to the voting of slavery's justification in Kansas, but obviously the popular sovereignty was coated in blood.
During the period between 1775 and 180, many African Americans gained freedom from slavery, yet during the same period, the institution of slavery expanded. The changes took place in different locations in the United States of America. The Northern states opposed slavery while the Southern states still enforced slavery. Many African American slaves managed to escape from the South to the North where they were freed from slavery. The freed African-American slaves spent their time working towards helping the slaves in the Southern states escape towards the North. The slaves in the South were forced to work on the tobacco and cotton plantations. They bided their time until they were able to escape.