What do Crevecoeur's "Letters From An American Farmer" and the 1790 Naturalization Act have in common?

The correct answer to this open question is the following.

What Crevecoeur's "Letters From An American Farmer" and the 1790 Naturalization Act have in common is the following.

Both documents refer to the characteristics of the American people, trying to create the specific American identity in times where new generations had been born in North America and the new country was forming during the American Revolutionary War against Great Britain.

Crevecoeur's "Letters From An American Farmer" was published in 1782, and he referred to the identity of the American people trying to answer the question, "Who we are?"

On the other hand, the 1790 Naturalization Act was a law of March 26, 1790, that included the rules to became a United States citizen. Just for white Europeans. Native American Indians and African slaves were excluded.

a.   it resulted in widespread unemployment.