Which day is the lowest point in Russian history, and the point were Russians lose their faith in the Czar? * September Revolt
Boston Tea Party
February Massacre
Bloody Sunday

the answer is A the September Revolt however here is another reason why they really lost faith. A so called healer named Rasputin was influencing the Tzar and the nobles as well as the people weren't very happy about that. the reason why the Tzar listened to  Rasputin was because  Rasputin said he could heal the Tsar's son from a disease.

Explanation:

b. ensure mutual protection from communism.

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roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.