Which of the following best explains why europe and asia are often grouped into a single region?

Because the British took slaves from there which spread their religion after slavery was over and they traded back and fourth also because the British fought a lot of wars over there and over time they may have learned more religion over there and believed it and spread it around and the Africans may have taken some religion from the British.

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The correct answer is:   [b]:   "has no atmosphere" .