Compare Immigration to the United States in the 1840s and 1850s

Compare immigration to the United States in the 1840s and 1850s to the present day. Is there a similarity?

A) Most immigrants in both time periods were from Mexico.
B) In both centuries, immigrants' primary motive was to escape religious persecution.
C) Most immigrants in both centuries sought better economic opportunities.
D) In both time periods, the primary group to arrive in America was children.
E) The immigrants in both periods focused on gold mining.