"Throughout the 19th and 20th century, immigrants came to the U.S. for ✶ 20 points
one primary reason. From the Irish immigrants who poured into the
industrial north in the mid-19th century to the eastern Europeans of the
early 20th century and the Mexican and Latin American immigrants of the
late 20th century, the American Dream has been the primary motivation."
This passage explains the primary motivation for immigration as:
A. The California Gold Rush
B. Economic opportunity
C. Free education
D. Freedom of speech