Answer: The Answer is (D), Approving presidential appointments.
Explanation: The Senate has the power to approve presidential appointments not the Congress.
Americans didn't like how brutal the Spanish tactics were
Winston Churchill led Britain during WW2
The Assasination of Archduke Franz Ferdinand.
Also Militarism was one of the reasons.
Remember this----> M-A-I-N= Militarism Alliances Imperilism Nationalism
those are some causes of WW2