400 BCE: Hopewell tradition Mound Builders smoke marijuana and produce hemp fabrics. The group of cultures collectively called Mound Builders were prehistoric inhabitants of North America who constructed various styles of earthen mounds for burial, residential, religious and ceremonial purposes. Since the 19th century, the prevailing scholarly consensus has been that the mounds were constructed … Continue reading 400 BCE: Hopewell tradition Mound Builders smoke marijuana and produce hemp fabrics