Which of these best explains why the 1924 Immigration Act favored immigrants from northern and western Europe?

A. the act required all immigrants to be Protestants
B. The act used the 1920 census to determine national quotas.
C. the act used the 1890 census to determine national quotas
D. the act required all immigrants to be fluent in English

C. the act used the 1890 census to determine national quotas

To determine why the 1924 Immigration Act favored immigrants from northern and western Europe, we need to analyze the options provided.

Option A states that the act required all immigrants to be Protestants. To confirm if this is the correct answer, we can check the text of the act or related historical documents to see if such a requirement was imposed.

Option B suggests that the act used the 1920 census to determine national quotas. To assess this answer, we can research how the act determined quotas and if they were based on the census. Again, checking the text of the act or related historical documents would be helpful.

Option C proposes that the act used the 1890 census to determine national quotas. Similar to option B, we can research if this is accurate by checking the relevant sources.

Option D states that the act required all immigrants to be fluent in English. To verify this choice, we can review the act or supporting documents to see if English proficiency was a requirement.

By conducting research into these options using reliable sources such as historical documents, scholarly articles, and reputable websites, we can determine which option best explains why the 1924 Immigration Act favored immigrants from northern and western Europe.

The correct answer is C. The act used the 1890 census to determine national quotas.

The 1924 Immigration Act, also known as the Johnson-Reed Act, aimed to restrict immigration and favored immigrants from northern and western Europe. It did so by implementing a national quota system that limited the number of immigrants allowed from each country. The quotas were determined using the 1890 census, which had a higher percentage of immigrants from northern and western Europe compared to the later years. This preference for immigrants from northern and western Europe was intentional and reflected the prevailing sentiment of the time to restrict immigration from other regions of the world.