By the change of environment , by the process
Answer:
is item A
Explanation:
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Explanation:
The early migrants firstly settled in America and came across Bering Straight .
Due to these diverse population , they scattered .
And the Natives developed by hunting , gathering , fishing . and started farming , and stayed at one place .
But before the appearance of the Columbian population , North America were having around 16 million Indians .
And
Thereafter , the population of Indians reduces due to the loss of battles against the spread of the White civilizations .
