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 correct answer for this question is "It grants the executive branch the power to make and execute the laws." The principle of "rule of law" evident in the Constitution is that it <span>grants the executive branch the power to make and execute the laws.</span>
The majority of American intervention in the foreign affairs occurred during the Cold War (this is your answer). Latin America was a frequent hotspot for activity as well especially towards the latter half of the Cold War with Fidel Castro's rise to power in Cuba.
<span>The Attack on Pearl Harbor by the Japanese caused the US to join WW2.</span>