The populations of countries like the United States of America and Australia have seen a huge increase because of ____.
A
Procreation
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B
Immigration
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C
Refugee crisis
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D
Emigration
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Solution
The correct option is B Immigration The populations of countries like the United States of America and Australia have seen a huge increase because of immigrants. If we analyze the trends of international migration, we can see that people migrate from the less developed nations to the more developed nations.