What Impact Did the Hernando De Soto Expedition Have on the Mound

Multiple Choice

What impact did the Hernando de Soto expedition have on the mound builders?

A) the Spanish, with their superior weaponry, defeated the mound builders in a protracted, four-year war
B) these Spaniards may have inadvertently introduced smallpox and other infectious diseases against which Native Americans possessed no immunity, resulting in epidemics and a dramatic reduction in native population
C) it was de Soto and his men who introduced the idea of constructing mounds in the first place
D) none; mound-builder culture had already collapsed before the arrival of the de Soto expedition