The best explanation for the declining percentage of foreign-born people in the United States between 1910 and 1940 would be "<span>C) more restrictive immigrations policies in the United States," since there was a heavy "Nativist" sentiment in the US during this time. </span>
D. economic prosperity
the great potato famine left many irish in poverty causing them to migrate to america!
they saw slavery as a sign of privilege
