Why did the framers of the U. S Constitution include this passage?

The framers were afraid that too strong a central government would easily bring about autocracy. In order to restrict the authority of the central government, the framers wanted to make it clear in the Constitution that certain powers were emphatically denied to the Federal Government.

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The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .

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