One of the reasons the articles of confederation failed was that states had too much

answer: the federal government is composed of three distinct branches: legislative, executive and judicial, whose powers are vested by the u.s. constitution in the congress, the president and the federal courts, respectively.

explanation:

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.

the answer is d. selective incorporation. (apex)