Why is the caste system so highly controversial in the west?

If one thinks illegal immigrants should become american citizens, should they become american citizens automatically or should there be a waiting period?

How would high tariffs hurt america? a. fewer immigrants would be able to move to america b. sales of american products to other countries would go down c. americans would sell more goods to other countries d. goods imported from other countries would cost less

Explain how republicans gained control of southern state governments?