Final answer:
The Quota Act of 1921 and the National Origins Act of 1924 were laws designed to restrict immigration to the United States and control the ethnic makeup of the population.
Step-by-step explanation:
The Quota Act of 1921 and the National Origins Act of 1924 were both laws designed to restrict immigration to the United States and control the ethnic makeup of the population. The Quota Act established a quota system that limited the number of immigrants based on a percentage of the population from the same country as counted in the 1910 census.
This law aimed to curb the tide of immigrants, primarily from Southern and Eastern Europe. The National Origins Act went further by lowering the quotas to 2 percent of the 1890 census, further limiting immigration from Southern and Central Europe.