Sandra Day O'Connor was the first woman to serve on the United States Supreme Court, appointed in 1981. Her tenure was marked by a profound commitment to judicial independence and a moderate conservative approach to many cases. O'Connor's judicial philosophy focused on pragmatism and the importance of considering the consequences of decisions over strict legal adherence. Throughout her career, she played a pivotal role in key rulings, particularly in cases involving women's rights and affirmative action. O'Connor's appointment opened doors for future female justices, symbolizing a significant milestone in the representation of women in the American legal system.