Answer:
B. Mississippian
Explanation:
Hernando DeSoto was a conqueror (conquistador) and Spanish explorer born on the 27th of October, 1495 in Extremadura, Crown of Castile. He died of fever at the bank of the Mississippi River in Louisiana on the 21st of May, 1642.
Hernando is considered to be the first European explorer that made an expedition into the United States of America traveling through different states and territories such as Mississippi, Florida, Alabama, Georgia etc. Thus, as a result of his expeditions to the south eastern part of the United States of America; Hernando had an encounter in 1541 with so many natives of American such as the Mississippian who were residing by the Mississippi River valley and its tributaries
<em>Hence, the group which Hernando DeSoto encountered during his expeditions were the Mississippian, who were fondly known to build large earthen pyramid or platform mounds. </em>
