Final answer:
The Articles of Confederation created a one-branch government consisting of a national legislature called Congress.
Step-by-step explanation:
The Articles of Confederation created a one-branch government consisting of a national legislature called Congress. The Articles of Confederation were the first constitution of the United States, in effect from 1781 to 1789. However, it had several weaknesses, such as the lack of a strong central government and the inability to levy taxes, which led to the drafting of the Constitution to establish a more effective government.
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