I think it was because Children would listen better, and would have no control over what they were doing int he factory, while men may have put up a fight, and would refuse to listen. Also Children were more easily bribed, and brainwashed than adults
This was a mixture of things.
The increase in population from soldiers and influx of immigrants caused the need for more food to be produced and more jobs to be demanded. So farmers started over producing which led to the Dust Bowl and, eventually, the Great Depression.
The steam engine and steam locomotive evidently had major consequences on European society. Positive and negative effects are apparent, as these major technological breakthroughs transformed European society. Even today, many aspects of society and economics are present due to the profound impact these inventions had, which is why they are such big turning points in history.
Answer:
Because pearl harbor was bombed and now it was affecting them and they were already on the edge of joining but the main reason is pearl harbor.
Explanation:
hope it helps.