What was one significant challenge face by the limitations of the articles of confederation

One of the biggest problems was that the national government had no power to impose taxes.

Explanation:

To avoid any perception of “taxation without representation,” the Articles of Confederation allowed only state governments to levy taxes. To pay for its expenses, the national government had to request money from the states.

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worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)