What was the most difficult challenge did the united states have during the 1970's?

How can you use document e and f to argue that imperialism was more important than alliances and arms build up as the underlying cause of ww1? how could you counter this argument

Sparta faces threats from without and within the city-state who posed these threats.

Which of the following quotes from the constitution describes the senate? "no person…who shall not have attained to the age of twenty five years, and been seven years a citizen of the united states, and who shall not, when elected, be an inhabitant of that state in which he shall be chosen." "the…shall chose their other officers, and also a president pro tempore, in the absence of the vice president, or when he shall exercise the office of president of the united states.""the…shall be composed of members chosen every second year by the people of the several states.""the…shall choose their speaker and other officers; and shall have the sole power of impeachment."