Two nations that most immigrants came from during the mid-1800s include Germany and Ireland.
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Answer:
C. comforting touch is more important than food, particularly when an infant is stressed
Explanation:
According to harlow's experiment, comforting touch that given by the parents whenever the child experiencing emotional stress will provide the sense of care and protection that make the child felt safe and taken care of.
According to the experiments, infants who constantly receive such loving treatment tend to grow up to be a more emotionally stable adults with high self-esteem compared to the child that never receive such treatment.
The correct answer is disease.
Many of the Europeans were carrying disease that they had acquired immunity to since the diseases had been rampaging around Europe for centuries.
But the people of the Americas did not have the immunity and it almost wiped them out.
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