Answer:
by dedicating the battlefield to the men who died there
Step-by-step explanation:
In what was later known as Gettysburg Address, the official dedication ceremony for the National Cemetery of Gettysburg in Pennsylvania, on November 1863, President Abraham Lincoln delivered a speech, mentioning that “our fathers brought forth on this continent, a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.”
Hence, he referenced the principles of human equality in the Declaration of Independence and connected the sacrifices of the Civil War and the Union Soldiers at Gettysburg with the desire for “a new birth of freedom,” together with notable preservation of the Union created in 1776 and its ideal of self-government.