A region in the United States of America which is richest in minerals such as copper, zinc, and silver is: A. 1.
The richest in minerals.
In the United States of America, the geographical region with the highest deposit of mineral resources is Nevada and this is represented by the number 1 in the map shown above.
This ultimately implies that, Nevada is a region in the United States of America which is richest in minerals such as:
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