Why was the plessy vs. ferguson important for us history ?

"The Plessy v. Ferguson case was important because it established the constitutionality of "separate but equal" laws, in which states segregated public services and accommodations for African-Americans and whites. Decided in 1896, Plessy v. Ferguson dictated racial law throughout the country until Brown v."

^^^ i agree with the person above me, good luck on whatever : )