Answer :

The settlers that went West to to settle in  New Mexico were Investors and fur traders.
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Answer:

Thanks to a high birth rate and brisk immigration, the U.S. population exploded in the first half of the 19th century, from around 5 million people in 1800 to more than 23 million by 1850.  

Such rapid growth—as well as two economic depressions in 1819 and 1839—would drive millions of Americans westward in search of new land and new opportunities where new mexico was part of.

Explanation: