The Johnson-Reed Act of 1924,with Its Imposition of National Quotas

The Johnson-Reed Act of 1924,with its imposition of national quotas and racial restrictions,contributed to the U.S.racial order by:

A) distinguishing all Europeans as part of a white race,distinct from all those considered nonwhite
B) blaming immigrants for the rise of urban poverty and class conflict
C) creating a symbolic boundary between ancestry and phenotype in racial classification
D) Producing rigid immigration controls that gave rise to illegal border-crossing