Final answer:
The Gettysburg Address is the speech made by Abraham Lincoln in 1863 emphasizing human equality and democracy during the American Civil War.
Step-by-step explanation:
The speech referred to by Abraham Lincoln on human equality and the sacrifices made by soldiers was the Gettysburg Address. Delivered on November 19, 1863, during the American Civil War at the dedication of the Soldiers' National Cemetery in Gettysburg, Pennsylvania, Lincoln emphasized the principles of human equality espoused by the Declaration of Independence and explained the Civil War as a struggle for the preservation of the Union sundered by the secession crisis, with a new birth of freedom, and ensuring that "government of the people, by the people, for the people, shall not perish from the earth". Known for its brevity, historical context, and depth of meaning, it is one of the most revered speeches in American history.