What was one reason why the equal rights amendment failed?

The Equal Rights Amendment or ERA for short, was an amendment that sought to end gender-based discrimination in the United States.

It didn't have the three-fourths of approval it needed in the Congress. Nevertheless, people believe the reason it failed on the voting was because campaigns to "Stop ERA", claiming it would eliminate laws created to protect women, claiming that if there was no difference between them they wouldn't need "extra" protection, rendering these laws useless. This prejudicial thinking might have influenced the congress to vote against ERA.

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.