The Constitution has three main functions. First it creates a national government consisting of a legislative, an executive, and a judicial branch, with a system of checks and balances among the three branches. Second, it divides power between the federal government and the states. And third, it protects various individual liberties of American citizens.
General Douglas MacArthur is known for island hopping, a military strategy where they would establish military bases and gain control of key islands one after another.