Mound builders used copper to build the plaques
Answer = Copper
Answer:Because they dont want to get hurt
Explanation:
The Arts and Crafts Movement<span> began in Britain around 1880 and quickly spread to America, Europe and Japan. Inspired by the ideas of John Ruskin and William Morris, it advocated a revival of traditional handicrafts, a return to a simpler way of life and an improvement in the design of ordinary domestic objects.
Hope I helped!</span>
