Abraham Lincoln - Civil War President Abraham Lincoln was assuredly one of the greatest presidents in American history. This is demonstrated by his effective administration during the Civil War, the creation of policies that benefited everyone in the United States and the efforts that kept the United States from splintering during the Civil War and from its aftermath. Lincoln made excellent decisions in the Civil War. He guided his nation from being torn apart by conflict. He reacted quickly when the War was suddenly sprung upon him. His blockade of the southern ports weakened the