How did the mound builders use the mounds?

They were used for storing goods in. So the other attackers couldn't steal there goods.They sometimed put thier leaders in there or even lived there.

i think the question should be; what implements did they use. artifacts are what are found in an archaeological dig.

Well they only used tools for hunting and so there wasnt a big variety........ but they used bow and arrows, spears, and axes! :) im glad i could help!

cow blood

They used buckets of dirt.