President Abraham Lincoln is referring to the he founding of the United States.
Explanation:
In his speech at the dedication of the Soldier's National Cemetery at Gettysburg, President Abraham Lincoln reasserts the importance of remembering the sacrifices of those lives that were lost during the American Civil War. Referring to the "fathers" who had founded the nation of the United States, he implored on the people to honor the dead and remind them of the purpose of the sacrifices of the soldiers. They had bravely fought just so that the sake of their fellow citizens, that they may have freedom, equality, and national unity.
