What river was key to the union's battle plan? savannah river chattahoochee river mississippi river st. mary's river

How did the growth of railroads american businesses expand

Where did the constitutional convention take place

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