The correct answer is letter A.
Explanation: In the nineteenth and in the twentieth century most of people classified as middles class were living in tenement houses with bad conditions, but it was where they could live.
The *Red Scare* was a wholly unjustified political ploy that crippled the ability of the USA to deal with the USSR in a forthright manner so no it was not justified in the least.
Baron de Montesquieu define that the power should be separated between he is the reason we have checks and balance
"It displayed how the United States would take a more aggressive role in the world" is the correct answer.
Be more specific about your question. Which war did you mean?