Lincoln’s main purpose in his gettysburg and second inaugural address was to question 2 options: get support from foreign countries to defeat the south preserve the union encourage the splitting of the union blame the conflict on the south and collect reparations from the rebellious states.

Lincoln's main purpose in his Gettysburg and Second Inaugural Address was to C. preserve the Union.

In the Gettysburg's Address, Lincoln honored the Union dead and remarked the listeners that the purpose of the soldier’s sacrifice was equality, freedom, and national unity.

On the other side, the Second Inaugural Address offered Lincoln’s most profound reflections on the meaning and causes of the war. The "scourge of war," as he indicated, was best understood as divine punishment on Americans (both from the North and South) for being accomplices of commiting the sin of slavery, and ends by demanding compassion and reconciliation.