convention had been officially called to revise the existing articles of confederation many delegates had much bigger plans
Explanation:
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Uncle Tom's Cabin was a novel written by Harriet Beecher Stowe about slavery in the south. When people read it, they started to realize and be informed about what slavery was like, so more people started being opposed to slavery (because before this, people in the north tended to not care) and more people became abolitionists.
The Barbarian attacks on Romepartially stemmed from a mass migration caused by the Huns' invasion of Europe in the late fourth century. When these Eurasian warriors rampaged through northern Europe, they drove many Germanic tribes to the borders of the Roman Empire.
The civil rights movement is the answer.