Who was known for advocating for greater rights for women and was the wife of John Adams?

Abigail Adams is recognized for her advocacy for women's rights and is perhaps most famously known for her correspondence with her husband, John Adams, during the American Revolution. In her letters, she urged him to "remember the ladies" when forming the new government, highlighting the importance of women's rights and interests in the face of the legal and societal restrictions they faced. This insistence on women's consideration in matters of law and governance marked her as an early proponent of women's rights in the United States, making her a significant figure in the history of American feminism.

The other individuals listed played different roles in American history. Dolley Madison was known for her role as First Lady and her efforts during the War of 1812. Martha Washington served as the first First Lady of the United States but was not particularly noted for advocating women's rights. Elizabeth Cady Stanton was a leading figure in the women's rights movement, but her prominence came later in the 19th century, after Abigail Adams' time. Thus, Abigail Adams stands out as the correct answer for her early and direct advocacy in the context of her era.