According to Lincoln's Gettysburg Address,
what principles were at stake in the war?

In it, he invoked the principles of human equality contained in the Declaration of Independence and connected the sacrifices of the Civil War with the desire for “a new birth of freedom,” as well as the all-important preservation of the Union created in 1776 and its ideal of self-government.

Explanation:

answer; the civil right act of 1964;

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.