Because they built large mounds for ceremonial and burial use.
mound builders
how did the mound builders survive
The Maya of Mexico lived around the same time as the Mound Builders
what is mound builders jewery meant for
the mound builders
the mississippians are mound builders and they are the last of the mound builders in the usa
my answer is builders mound
early American Indians
the mississippians are mound builders and they are the last of the mound builders in the usa
The Mound Builders cruised to tokyo, Japan
The mound builders had no caste system.
The mound builders lived in the eastern part of the U.S.