The correct answer is:
A. Confirming executive appointments
B. Holding impeachment trials
E. Approving international treaties.
Explanation:
The United States Senate is one of the two cameras of the Legislative branch, and is given exclusive powers established in the United States Constitution. Those exclusive powers are:
The power to confirm executive appointments: The President receives the advice and consent of the Senate in a vote process to appoint federal judges, executive positions and ambassadors.
The power to approve international treaties made by the President: Two-thirds of the Senate must vote in favor to approve international treaties, as part of the check and balances system, to restrain the power of the President.
The power to hold impeachment trials: The Senate holds impeachment trials when the House of Representatives decides to impeach an elected official, two-thirds votes are required to remove the officer.
declare war on Japan once the Nazis were defeated is your answer.
In the years before the declaration of war by the USSR on Japan (following the two nuclear attacks on Hiroshima & Nagasaki), the USSR had tried to keep a good relationship with Japan to avoid fighting a two-front war (which would be extremely hard considering the great distance in between European Russia and Asia Russia. However, if USSR was able to defeat one and then the other, it would be easier.
This led to the decision to help the Allies take pressure off the landing of the French beaches (Sword, Juno, Omaha, Utah, etc), and was able to 'tie up' large amounts of German troops in the east.
In return, the USSR declared war on Japan following the bombing of Hiroshima & Nagasaki (as said above), and the declaration of war on Japan, leading to Japan's surrender.
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It provided the minimal assistance initially but eventually increased assistance and market regulation because they wanted to show minimum capability to what they were doing and how they were doing it.