Adena, Hopewell, and Mississippians
building mounds such as the serpent mound
They are earthen mounds.
Mounds were built for ceremonial and burial purposes.
Hopewell people build mounds for burial grounds.
YES
They were burial
The Indian Mound Builders built mounds for elite residential purposes, burials and religious and other ceremonials. The mounds were usually flat-topped pyramids or platform mounds.
because nothing haha
Beavers build dams .
They both build burial mounds
all over Ohio
Termites build mounds ; see relevant link .