There was no foreign policy, and states printed their own currency. The federal government could not tax; there was no Federal Army, no judicial system, and a lack of national compulsive power over states.
It was a weak alliance, it needed approval from 9 of all 13 states to be amended, no executive or judicial branch, only a one house congress where every state had 1 vote. It couldn't regulate interstate trade, impose taxes, or coin money. They also had no leader to run the country.