PLEASEEE HELP I WILL GIVE U BRAIN THING IF ITS CORRECT

What policy did "jim crow" laws put in place? black codes integration segregation 2. the supreme court case that established the doctrine of "separate but equal" was dred scott v. sandford plessy v. ferguson brown v. board of education 3. the supreme court case that overturned the doctrine of "separate but equal" wasdred scott v. sandford plessy v. ferguson brown v. board of education

Why does the united states constitution require that a national census be taken every ten years?

What important race leader of the early twentieth century is being described?