Napoleon had been fighting this army of slaves and free people in Haiti and it depleted his forces. And after the Revolution, when the French were driven out, they stopped and sold this big chunk of North America to the Americans for very little money.
A free life cannot acquire many possessions, because this is not easy to do without servility to mobs or monarchs.
No, my degree was history, not the practice of art! I can't draw to save my life you know.