The US Constitution divided power in three independent branches: the Legislative Branch, the Executive Branch, and the Judicial Branch. This separation applies to the federal government and also to the government of each of the States.
The main aim was to keep power balanced. The Constitution also established the 'Checks and Balances' system, through which each of the powers can check on the others and prevent that they exceed their functions. None of the three powers could gather such a large amount of power to rule over the others, without being punished.
Answer: D. Declaring war
Explanation: The national government was in charge of preparing for war against Britain. The Articles of Confederation gave Congress the authority to appoint military officials, but not to draft soldiers. It was mainly up to the states if they wanted to contribute men for the war.
