What was a weakness of the Articles of Confederation?

The federal government could not elect a president.
The federal government could not elect a president.

States could not tax goods made in other states.
States could not tax goods made in other states.

State could not make their own monetary systems.
State could not make their own monetary systems.

The federal government could not raise money to form an army.

The federal government could not raise money to form an army.