Answer:
The lines of Abraham Lincoln's “Gettysburg Address” that support the claim for the purpose of the war are the following: “We here highly resolve these dead shall not have died in vain; that the nation, shall have a new birth of freedom, and that government of the people, by the people, for the people, shall not perish from the earth.
Step-by-step explanation:
The purpose of the American Civil War was to abolish the black slavery and to restore the national unity.