Answer:
Landmark cases are those that have had a long-term impact on how a law is applied, often involving your personal rights and liberties. A landmark case is a court case that has been researched for its historical and legal significance because it is significant to the country's history. Importance: The Brown decision is heralded as a landmark decision in Supreme Court history, overturning Plessy v. Ferguson (1896) which had created the "separate but equal" doctrine.