What was the significance of the boycott and the famous arrest of Rosa Parks to U. S. History?

a system of cooperative federalism emerged, as the powers of the federal government expanded.

benjamin franklin was a founding father and a polymath, inventor, scientist, printer, politician, freemason and diplomat. franklin to draft the declaration of independence and the u.s. constitution, and he negotiated the 1783 treaty of paris ending the revolutionary war   and i know this because he was very important in history

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