What milestone did Sandra Day O'Connor achieve in the Supreme Court?

Sandra Day O'Connor is recognized for being the first woman to serve as a Justice on the Supreme Court of the United States. Appointed by President Ronald Reagan in 1981, her selection marked a significant milestone not only in the history of the Court but also in the broader context of women’s representation in the judiciary. O'Connor's appointment opened doors for future generations of women in law and politics, symbolizing progress toward gender equality in high-level governmental positions. Her impact as a trailblazer extended beyond her appointment, as she played a pivotal role in many important cases during her tenure, influencing issues surrounding women's rights, affirmative action, and states' rights.