The economic condition of the United States changed after the Civil War, where it saw the emergence of massive railroads and industries. Before the Civil War, the Industrial expansion found in the North. The North had industries and manufacturing economy.
Slavery as abolishing in America after the war, the South remain agriculture economy with the help of sharecroppers.
Since the Constitution was written in the 1770s there needs to be a law allowing it to change. As society becomes more evolved the constitution needs to be able to evolve with it. Many laws in the original constitution no longer apply so they have been removed to keep up with the times.
He has a project called arriving at moral perfection. He creates this list of attributes. He cultivated his character with a plan. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.