Is this statement true or false? the mound builders made ear spools from plastic or metal

The statement is FALSE.

Explanation: The Mound builders were inhabitants of North America during the period 500 BC to 1650 AD. If we take into consideration this time reference, it is impossible to say that they could use plastic to made ear spools. So, they used metal, especially copper, but they could not have used plastic.

that’s true, tatiana prouskouriakoff established that the inscriptions were primarily historical.   they recorded events in the lives of mayan rulers and their families.