Two speeches John Smith Preston, Abraham Lincoln

Read the above two speeches (John Smith Preston, Abraham Lincoln), and answer all of the following questions in your essay:

a) JOHN PRESTON SMITH: Is it legal for southern states to secede from the Union? What has the North done to cause southern states to leave the Union?

and

b) ABRAHAM LINCOLN: Can states break away (secede) from the Union? Why or Why not? What are Lincoln's views toward the South? What are his duties as President of the United Sates?