What was the main failure of the articles of confederation that eventually led to the us constitution?

The main failure of the Articles of Confederation was that it gave too much power to the states, basically the states were all divided into their own governments. The national government have too little power and couldn't properly control the states. The US Constitution was created to balance out the powers between state and national government. 

The Articles of Confederation were weak in that the federal government was not able to tax or raise an army or enforce the laws.