<span>I think they were to help the Japanese reach higher levels of civilization and humanity during their times</span>
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.
<span>"The anti-federalists argued and debated over states rights versus federal rights with the federalists.."</span>