Final answer:
The Articles of Confederation served as America's first constitution during the Revolutionary War.
Step-by-step explanation:
The document that served as America's first constitution during the Revolutionary War was the Articles of Confederation. This document was adopted by the Continental Congress in 1777 and remained in effect until the ratification of the Constitution in 1788. The Articles of Confederation established a weak central government and granted most powers to the individual states.
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