B. Hydroelectric.
(Edit: Why did you ask the question if you had the answer?)
Answer:
China and the Soviet Union (Russia)
Explanation:
<span>In 1867 their was two laws passed: First, Tenure of Office Act which forbade president to remove civil officials without senate's consent. Secondly, Command of Army Act which prohibited president from issuing military orders except through commanding general of army (Grant) whose headquarters were to be in Washington and who could not be relieved or assigned elsewhere without senate's consent</span>