Did the article set up a system of justice

Yes,

Both provide that the national government would conduct foreign affairs, although the Articles allowed for states to send and receive embassies with the approval of Congress.  Both allow the Congress to set a system of uniform weights and measurements and to set standards for uniform coinage.  The Confederation Congress could also regulate interstate movement.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.