<span>The armies became immobile because of trench warfare. avoid the problem of fighting allied powers on two fronts. ... Economic hardships brought on by the war resulted in the downfall of the czar.</span>
The president pro tempore of the Senate is the second highest ranking official in the Senate, after the Vice President of the United States, who is meant to run business in the senate when the Vice President is absent.
Answer:
gas mask airplane
Explanation:
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The population decimated , There was millions of Jews killed but millions still remain,but the population is still dropping.
