Which court case allowed american to practice the separate but equal clause

Plessy v. Ferguson

Plessy v. Ferguson was a landmark 1896 U.S. Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine. The case stemmed from an 1892 incident in which African American train passenger Homer Plessy refused to sit in a car for Black people. hope i heleped g day

Explanation:

the answer to this question is the third option. hope this

the answer is a new goverment.