What aspect did the Articles of Confederation lack which the Constitution addressed?

The Articles of Confederation were the first governing document of the United States, but they created a system of government that was too weak to effectively manage the country's needs. One significant limitation was the inability of the federal government to levy taxes. Under the Articles, the national government relied on contributions from the states for revenue, which often fell short. This lack of financial power hindered the government’s ability to pay debts, fund military operations, and provide public services.

The Constitution addressed this critical issue by granting Congress the explicit authority to levy taxes, thereby providing the federal government with a stable source of income. This change was essential for establishing a functioning and fiscally responsible government, allowing it to operate more effectively and respond to the needs of the nation.