Answer: It represented a recognition that ethnic minorities were not the only groups facing discrimination in American society.
Step-by-step explanation:
In the second half of the 20th century, there was a march towards the implementation and enforcement of Civil rights for ethnic minorities especially Black Americans yet women's rights took a backseat to this and they still saw themselves treated as inferior to men.
This 1972 law in the excerpt, had been pushed by Women's Rights movements to remind the U.S. that women were still being discriminated against just like ethnic minorities and so there was a need to protect them as well.