Explanation:
The American Revolution was principallycaused by colonial opposition to British attempts to impose greater control over the colonies and to make them repay the crown for its defense of them during the French and Indian War (1754–63). ... Read more about the causes of the American Revolution in the United States article.
Answer:
Sectionalism increased steadily in 1800–1850 as the North industrialized, urbanized and built prosperous factories, while the deep South concentrated on plantation agriculture based on slave labor, together with subsistence farming for poor whites who owned no slaves.
I don't know the answer but try reading this:
https://www.history.com/topics/1960s/robert-f-kennedy
It should help give you information.
Good Luck!!