Answer:
under the age of 21 in many american states
Explanation:
They needed people to work the factories with the men are gone to war.
The answer is "according to <span>multiple trace theory".
Multiple trace theory (MTT) refers to a memory consolidation demonstrate progressed as an elective model to quality hypothesis. It places that each time some data is displayed to a man, it is neurally encoded in a novel memory follow made out of a mix of its traits.
</span>