Final answer:
The Articles of Confederation was ratified in 1781 and was replaced by the United States Constitution in 1787.
Step-by-step explanation:
The Articles of Confederation was ratified in 1781. The Articles of Confederation served as the first constitution of the United States, and it established a weak central government with limited powers. It was replaced by the United States Constitution in 1787 as it proved to be ineffective in governing the nation.
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