Jacqueline Kennedy Onassis played a significant role in American history as the First Lady of the United States from 1961 to 1963. She was a key figure during the presidency of her husband, John F. Kennedy, promoting cultural programs, historic preservation, and arts initiatives. Following her husband's assassination, she became a symbol of grace and resilience, dedicating herself to preserving his legacy. Her contributions to American culture and her advocacy for the arts continue to be influential, not only in her time but also in contemporary society.