Answer:
Southern and Eastern Europe.
Explanation:
This wave of immigration lasted from 1866-1915 and brought 25 million to the United States, mostly from southern and eastern Europe. "Pushed" out of Europe by economic hardship and political persecution and "pulled" to the United States by the availability of jobs, these immigrants entered the country through gateways like Ellis Island and settled in America's teeming cities to take jobs made available by the Second Industrial Revolution.
U.s history is important because an educated electorate is crucial to protecting and nurturing freedom. Historical study is important for many reasons. But for an American, the study of u.s history is particularly important. We need not all be scholars of the American revolution, but we do need an appreciation of what sets us apart from other countries and where we still need to improve.
The basic concept was that the Americans had to prevent the first domino from falling (country turning to communism) in order to prevent the unfold of communism. As such, historians now argue that the US used the Domino principle to justify its involvement in Korea, just as it did inside the later Vietnam war.
On June 27, President Truman announced to the country and the arena that the us would interfere in the Korean conflict a good way to save you the conquest of an unbiased state through communism.
The US and its EU allies, guided by means of their very own doctrine of containment, sharply criticized the Soviet move into Afghanistan and devised numerous measures to compel Moscow to withdraw.
Learn more about communism here: brainly.com/question/12173354
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