Which United States Supreme Court decision resulted in reduced power for state governments?

The decision in Roe v. Wade is significant because it established a constitutional right to privacy that extends to a woman’s ability to make her own medical decisions, particularly concerning her body and reproductive health. This ruling effectively limited the authority of state governments to regulate abortions, asserting that states could not impose undue burden on a woman's right to choose an abortion during the first trimester of pregnancy.

The outcome of this case meant that states were restricted in how much power they could exercise over personal liberties related to medical decisions. This landmark ruling set a precedent for how constitutional rights can limit state powers, showcasing the interplay between federal rights and state authority. As a result, Roe v. Wade is often seen as a key moment in affirming individual rights over state legislation, signaling a broader principle that protects citizens from state overreach in personal matters.