Betty Friedan was an influential American feminist, writer, and activist, best known for her groundbreaking book, *The Feminine Mystique*. Published in 1963, this book challenged traditional gender roles and sparked the second wave of feminism in the United States. Friedan's work highlighted the dissatisfaction many women felt in their domestic lives, encouraging them to seek fulfillment beyond the home. In addition to her writing, Friedan co-founded the National Organization for Women (NOW) in 1966, which aimed to advocate for women's rights and equality. Her efforts helped pave the way for significant changes in laws and societal attitudes regarding women's roles in both the workplace and family life.