Which reason best explains why the inability of congress to levy taxes under the articles of confederation was so problematic?

The Articles of Confederation granted to every states its own freedom and sovereignty. The Congress of the central government didn’t fee taxes or regulate commerce.  

This is one of the reason why the states could tax tariffs on other’s states’ goods, that caused arguments between the states

It was unable to raise revenue to pay debts from the American Revolution.

Explanation:

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.

answer: ensure protection from communism

explanation:

the north atlantic treaty was largely dormant until the korean war initiated the establishment of nato to implement it, by means of an integrated military structure: this included the formation of supreme headquarters allied powers europe in 1951, which adopted the western union's military structures and plans.