A primary limitation of the national government under the articles of confederation was

Its inability to levy taxes to raise revenue

Explanation:

The Articles of Confederation led to the establishment of a central government that was weak and it further put most of the powers in the hands of the states of the nation. One of the core issues the national government had was their inability to impose taxes because the articles of the confederation stipulated that only states should levy taxes.

The national government did not have enough money that they require because they were heavily reliant on the states to give them some funds gotten from those taxes and these states failed in doing as expected in most cases.