The 29th Amendment to the United States Constitution was proposed in 1978 but was never ratified. It aimed to guarantee equal rights for all citizens regardless of sex, ensuring that rights could not be denied or abridged on the basis of gender. This amendment was part of the broader movement for women's rights and equality during the 20th century. The amendment was introduced in response to the growing demand for gender equality, particularly during the women's liberation movement. Despite significant support, it fell short of the required number of state ratifications by the 1982 deadline, highlighting ongoing debates about gender equality in the U.S. legal system.