In Spanish you need to use por favor with the commands,
because is better and more polite.
More polite is ¿Podría callarse por favor? ¿Podría hacer silencio por favor?
Hope this helps
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Answer:
a.
keep Russia in World War I
a.
Soviet Union would take control of Berlin
a.
Germany
Explanation:
The answer to your question is,
to seek optimum levels of arousal.
-Mabel <3