What was Shays’ Rebellion? Why did it represent the beginning of the end for the Articles of Confederation?

Shay's Rebellion showed the weaknesses of the Articles of Confederation. When the central government couldn't put down the rebellion, the first stirrings of federalism began to gather strength. ... The government gave most powers to the states, and the central government consisted only of a legislature.

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hawaii was the final state

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.