Question

which supreme court case ended \separate but equal\ and integrated america back into one society?
plessy v. ferguson
brown v. board of education
dred scott v. sanford
miranda v. arizona

Explanation:

Plessy v. Ferguson established the "separate but equal" doctrine. Brown v. Board of Education (1954) overturned this doctrine, ruling that racial segregation in public schools was unconstitutional, effectively ending the legal basis for "separate but equal" and advancing racial integration in the U.S. Dred Scott v. Sanford centered on enslaved people's citizenship, and Miranda v. Arizona established rights for criminal suspects.

Answer:

B. Brown v. Board of Education