I read a book on Abraham Lincoln to DD4.5 yesterday. The book mentioned his famous Gettysburg speech and the line "All men are created equal." After we finished the book,DD asked me," Mom, why did he say all men and not all people. Was it back in the time when men believed that women were not equal to them." So we spent another 10 minutes talking about women's right and equality.

PS. We had read a book on Amelia Earhart a few weeks ago so she was aware of the women's rights movement.
PPS. For some reason, she loves biography. She picks them out at the Library. I OTOH have never found biographies interesting so this is all very exciting and new for me as well.