Answer:
The answer is a. the surge in immigration of non-Anglo Europeans to the United States
Explanation:
The first statute in the United States to codify naturalization law. Alternately known as the Nationality Act, the Naturalization Act of 1790 restricted citizenship to "any alien, being a free white person" who had been in the U.S. for two years. In effect, it left out indentured servants, slaves, and most women. This led to an influx of immigrants from East and South Europe.