What benefit to republican virtue did Jefferson see in the Louisiana Purchase?

What benefit to republican virtue did Jefferson see in the Louisiana Purchase?
 
  a. He hoped that the removal of France from the continent would end the immoral influence of French fur trappers on American settlers.
  b. He thought that the incorporation of Indian tribes from the Louisiana territory would greatly extend the American experiment in democracy.
  c. He believed that expanding into Louisiana would help forge a unified American national identity.
  d. He believed that the region could become a bastion of industry, which would lead to greater economic opportunities for more people.
  e. He saw the potential to fulfill his dream of a great agrarian republic in the huge, fertile Mississippi Valley.