The constitution actually differed from the articles of confederation by:
Constitution - Bicameral legislature, included provisions for an executive office, only the national government can coin money.
Articles of Confederation is known to be an agreement that actually existed among the 13 original states of the United States of America. This agreement actually served as the first frame of government.
Before its approval, there was much debate. But was later approved by the Second Continental Congress. It was then sent to the states for ratification.
The Articles of Confederation actually served as an official document that established the functions of government.
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