What year were the Articles of Confederation adopted by the Second Continental Congress?

The Articles of Confederation were adopted by the Second Continental Congress in 1781, making it the correct answer. This document served as the first constitution of the United States, establishing a framework for a national government. Although the process of drafting the Articles began earlier, their official adoption signifies the moment when they were agreed upon and put into effect. The Articles established a loose confederation of sovereign states and a weak central government, which ultimately led to various challenges that prompted the later drafting of the U.S. Constitution in 1787. This historical backdrop is essential in understanding the evolution of governmental structures in early American history.