Answer:
In the Gettysburg Address, the main idea is that the sacrifices of those who died on the battle field of Gettysburg were made to preserve the principles of human equality and self-government as set forth in the Declaration of Independence. One of the main ideas is human equality. So, by giving African American women the right to vote, it is symbolizing how the U.S is making progress in bringing human equality for all humans of different races and genders.
Explanation: