What does Johnson mean by calling America 'a nation of strangers'?

Question

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1 point
Americans are unfriendly
Immigrants built the country
Americans don't know each other
The country lacks unity

Answer 1

The phrase "a nation of strangers," as used by J. H. Johnson, typically suggests that Americans don't know each other well, highlighting the diversity and individualism within the country. Therefore, the most fitting answer would be:

Americans don't know each other.