Answer:
The Monroe Doctrine joined isolationism as a major part of United States foreign policy. It also told a hidden message. It told the world the United States wasn't weak group of states, but it had become a strong confident nation that was to be respected by the world.
Explanation:
Answer:
The vast Persian Empire contained many conquered peoples with different beliefs and cultures, while the Greek civilization consisted of independent city-states that all had their own beliefs.

National Association for the Advancement of Colored People (NAACP), interracial American organization created to work for the abolition of segregation and discrimination in housing, education, employment, voting, and transportation; to oppose racism; and to ensure African Americans their constitutional rights.
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Answer: the effect of the domino theory.
Explanation:
A domino effect or chain reaction is the cumulative effect produced when one event sets off a chain of similar events. The term is best known as a mechanical effect and is used as an analogy to a falling row of dominoes.
C. Herbert Hoover
In 1908, Hoover became an independent, traveling worldwide until the world war 1 <span> in 1914.
</span>When the world war 1<span> began in August 1914, Hoover helped return of around 120,000 Americans from Europe. He led 500 volunteers in food, clothing, steamship tickets and cash.
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