Answer:
A person must have been a citizen of the US for 7 years or more and must be 25 or older.
Despite its importance in the integration process, little work has been done on the economic effects of naturalization in the United States.
<em />It was a watershed event because it showed that the local culture and local people were done with being treated in a bad manner and that they will not allow for their culture to end. Their culture started getting incorporated in mainstream culture afterwards and this can be seen up to this day.<em>
</em>
I believe it is A. But your answers are a little mixed up so it’s a little confusing.