6. How did the national government become “custodians of freedom"?

Fifty-five delegates arrived in Philadelphia in May 1787 for the meeting that became known as the Constitutional Convention. Many wanted to strengthen the role and authority of the national government but feared creating a central government that was too powerful. They wished to preserve state autonomy, although not to a degree in which it prevents the states from working together collectively or made them entirely independent of the will of the national government.

Explanation:

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the northwest ordinance of 1787 guaranteed basic rights for settlers and banned slavery there.