Former Supreme Court Justice Sandra Day O'Connor has died, the Supreme Court announced. AdvertisementFormer Supreme Court Justice Sandra Day O'Connor, who became the first woman to serve on the nation's highest court, died on Friday, the high court announced. Before her tenure on the nation's top court, O'Connor served as the Republican leader of the Arizona Senate. O'Connor retired from the Supreme Court in 2005O'Connor announced her retirement in 2005 after her husband was diagnosed with Alzheimer's. Former Supreme Court Justice Sandra Day O'Connor testifies before the Senate Judiciary Committee on July 25, 2012 in Washington, DC.

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