Between the 1820s and 1850s, the largest population of immigrants to the
United States originated from what country?
(A) Russia
(B) France
(C) Poland
(D) Italy
(E) Ireland
Between the 1820s and 1850s, the largest population of immigrants to the United States originated from "Ireland," since this led to a major backlash against Catholics by many "Nativists".
