C.
Under a federal system, power is shared among different levels of government.
Answer:
B. Separation of Powers.
Explanation:
It is very important that the powers of the executive branch and of the President of the USA are defined. If it is not defined, we would have to answer the question "Who should be the commander-in-chief?" Congress? Chief Justice? The Joint Chiefs of Staff? The mayor of Washington D.C.? By clearly establishing the responsibility of the president as commander-in-chief , the Constitution´s fathers followed the principle of the separation of powers.
Answer:
The answer is D The oil and gas resources of the middle east
Explanation:
