Final answer:
The Seven Sisters refers to a group of prestigious women's colleges in the Northeastern United States, established between 1865 and 1880, which played a significant role in opening higher education to women.
Step-by-step explanation:
The Seven Sisters was a group of women's colleges in the United States. These prestigious institutions were established between 1865 and 1880, during the time when higher education began to open up to women. The colleges included Mount Holyoke, Vassar, Smith, and Wellesley Colleges, which provided a unique all-women environment offering young women an opportunity for higher education and potential careers, notably in teaching, social work, and other professions.
These colleges were located in the Northeastern United States and have played a significant role in the education reform by creating opportunities for young women to pursue higher education and careers. Such education reform was part of a broader movement that involved various women's organizations actively promoting social services and education, including the National Association of Colored Women's Clubs (NACWC) which provided support to African American women.