Final answer:
The Articles of Confederation were the first plan for a national U.S. government, but they lacked provisions for tax collection and regulation of international and interstate commerce.
Step-by-step explanation:
The first plan for a national government for the United States was the Articles of Confederation. This plan established a federation of states after the adoption of the Declaration of Independence. However, it lacked certain critical provisions. For example, it did not allow the newly formed U.S. government to levy and collect taxes or regulate commerce with foreign countries and interstate commerce.
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