Final answer:
The National Origins Act of 1924 and the Emergency Quota Act of 1921 limited the number of immigrants from different countries based on a quota system that was detrimental to immigrants from Southern and Eastern Europe and banned Asian immigration. option (B)
Step-by-step explanation:
The set of laws that established limits on how many immigrants from various countries were admitted into the United States each year, and specifically targeted immigrants from Eastern Europe were the National Origins Act of 1924 and the Emergency Quota Act of 1921. These acts aimed to preserve the idea of American homogeneity by implementing a quota system based on national origins that significantly reduced immigration from Southern and Eastern Europe while essentially banning Asian immigration. The quotas were firmly established using pre-existing U.S. census data, with particular emphasis on the years 1890 and 1910.
The Emergency Quota Act of 1921 was initially established to set a yearly constraint and restrict immigration from each nationality to 3 percent of the 1910 U.S. census figures. However, the National Origins Act of 1924 intensified these restrictions, setting the quotas at 2 percent of the 1890 census, which favored immigrants from Northern and Western Europe and discriminated against Southern, Eastern European, and Asian immigrants.