Many technological advances affected immigrants. For immigrants who lived in America, technologies such as the cotton gin could have affected them in the cities. Many immigrants, such as German, Irish, and other European immigrants worked in factories when they came to America. Therefore, new technologies could have increased their work efficiency in factories.
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USA joined WWI because, Germany was a big power, and they sank US merchant ships coming to Britain, and led US to see what's happening.
Answer:
C.
The Confederate forces were encouraged to start an offensive in the North and invade Maryland.
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Answer:
Because they didn't know about them yet.
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