Hays (2009): '"the first settlers of Japan, who were the Jomon people, crafted figurines called dogu. Afterwards, the Yayoi people (approximately 300 B.C. to A.D. 300), whose core was a different immigrant group in the beginning of the era, manufactured copper weapons, bronze bells, and kiln-fired ceramics. Typical artifacts from the Kofun (Tumulus) period (approximately A.D. 300 to A.D. 710) that followed were bronze mirrors and clay sculptures called haniwa, which were erected outside of tombs"'