In one of the great surprises in diplomatic history, French Foreign Minister Charles Maurice de Talleyrand makes an offer to sell all of Louisiana Territory to the United States.

Talleyrand was no fool. As the foreign minister to French Emperor Napoleon Bonaparte, he was one of the most powerful men in the world. Three years earlier, Talleyrand had convinced Napoleon that he could create a new French Empire in North America. The French had long had a tenuous claim to the vast area west of the Mississippi River known as Louisiana Territory, which had already been occupied by Native Americans for centuries. In 1800, Napoleon secretly signed a treaty with Spain that officially gave France full control of the territory. Then he began to…