Lincoln’s main purpose in his gettysburg and second inaugural address was to

Explanation:

Preserve the Union. Uniting the North and South, who has opposing views about the war, during the Civil War was Abraham Lincoln's purpose in his Gettysburg and Second Inaugural speech.

they believed democracy was worth the fight

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.