What was the supreme court’s rationale for its plessy v. ferguson decision? what impact did the decision have on the north? the south?

What is intervention ? in government terms

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

Why did china build the great wall of china?