Which of the following terms describes one nation refusing all trade with another?

c 3 branches because idk why they had 3 well when:

you think of it there are still contrys with 3

thurgood marshall

explanation: in 1954, thurgood marshall and a team of naacp attorneys won brown v. board of education of topeka, kansas. in this landmark decision, the supreme court held that segregation in public education violated the equal protection clause of the fourteenth amendment.