One serious economic problem under the articles of confederation was

The answer to this question was the differing tariff policies of the states. This was one of the economic problems of the Articles.  The Articles of Confederation was made and was agreed upon by the 13 original states of the United States. This served as the first Constitution of the United States. To preserve the independence and sovereignty of the states is stated to be a guiding principle of the Articles.

the answer is a new goverment.