Hernando de Soto was wounded in battle with the Native American's in 1541. He continued his journey in looking for treasures and this took him to Mississippi, in which he was the first white man to see and cross the Mississippi River. He then traveled to Arkansas and Oklahoma. He never found treasures there so he turned and headed back to the banks of the Mississippi River in Desoto County. There he died and was buried in the river so that the Native Americans would not learn of his death.
De Soto's view of this expedition was a "deadly disaster". They found no gold nor prosperity and founded no colonies. He caused aggressive relationships with the natives and the Europeans and his expedition carried many diseases which depopulated many cities which they crossed. But good thing also came from his expedition such as establishing the first population of mustangs in North America by his horses either escaping or being stolen. He has Desoto county, Mississippi and Hernando County, Florida named after him. He claimed large parts of North America for the Spaniards. And he also had the first recorded description of North America native habits before they had encountered other Europeans.