In May of 1539, more than six hundred Spanish soldiers stepped off their ships onto the shore of Tampa Bay, Florida, along with two hundred horses and a herd of pigs driven along as a walking food supply. At the head of the expedition was Hernando de Soto, a man who had already made one fortune conquering an empire and fully intended to make a second one doing it again.
De Soto had earned his wealth and his reputation in Peru, as one of the officers under Francisco Pizarro during the conquest of the Inca Empire — a campaign that had captured an emperor and looted more gold and silver than most Europeans of the era could imagine. De Soto came home rich beyond most noble families in Spain. It was not enough. He asked the Spanish crown for permission to conquer La Florida, the vast, largely unmapped territory north of the Caribbean, convinced that somewhere in it was another empire waiting to be plundered exactly the way the Inca had been.
There was no such empire. That did not stop him from searching for four years across a staggering stretch of what is now the southeastern United States — Florida, Georgia, the Carolinas, Tennessee, Alabama, Mississippi, Arkansas, Louisiana, and into Texas. It remains one of the longest overland expeditions in North American history, and one of the most destructive.
The Battle of Mabila
De Soto's expedition survived by taking what it needed from the Native nations whose land it crossed — food, guides, and forced laborers, seized through intimidation or violence when persuasion failed. The relationship between the Spanish and the peoples they encountered deteriorated the further the expedition marched. The breaking point came in October of 1540 at a fortified town called Mabila, in what is now Alabama, ruled by a powerful chief named Tuskaloosa. Accounts differ on exactly how the fighting began, but by the end of the day, the town had burned to the ground and thousands of people — the overwhelming majority of them Native warriors and townspeople — were dead. It stands as one of the largest and bloodiest battles fought on what is now U.S. soil up to that point in history, and almost nobody in the United States has ever heard of it.
The expedition pressed on. In May of 1541, somewhere near present-day Memphis, De Soto's men became the first documented Europeans to see the Mississippi River, which they called the Río del Espíritu Santo — the River of the Holy Spirit. They built rafts and crossed it, continuing west into Arkansas and Texas, still searching for gold that was never there.
By the spring of 1542, De Soto had fallen seriously ill with a fever, likely somewhere near the Mississippi River in present-day Louisiana or Arkansas. He died on May 21, 1542. His men faced an immediate problem: throughout the expedition, De Soto had let Native leaders believe he was immortal, sometimes claiming to be a child of the sun. If nearby communities learned he had simply died like any other man, his surviving soldiers feared it would invite an attack they had no strength left to survive. So, according to the chronicles kept by men on the expedition, they weighted his body and lowered it into the Mississippi River at night, and told anyone who asked that their leader had simply traveled on ahead.
Roughly half the expedition's original members were still alive by that point. The survivors built crude boats, floated down the Mississippi to the Gulf of Mexico, and eventually reached Spanish territory in Mexico in 1543 — four years, thousands of miles, and no gold to show for it.
Think About It
De Soto's expedition never found the wealth it was looking for, but historians believe the diseases it carried spread far ahead of and behind the actual line of march, weakening Native populations across the Southeast for generations. When English colonists arrived over a hundred years later, they often found land that looked emptier than it truly should have been — without understanding why. What does this tell you about how much of history happens outside of what any single expedition's own records describe?
No fortune, no empire, no second Peru. Just a river that, for four hundred years, kept the only secret De Soto ever managed to protect: exactly where he was buried.