Under the Articles of Confederation, chaos is insured, therefore we need the Constitution to provide the sense of authority, balanced power, and control necessary for our country to strive. The Constitution gives the national government the power to tax which allows them to fund our military(aka one of our main defenses against rivaling countries/governments). The Constitution also gave the states an "authoritative figure", the Supreme Court, to resolve any disagreements and to settle disputes to "unite" them together to ultimately work towards a common goal.