He should consult an archaeologist. They study ancient studies looking for remains of buildings, objects, people, etc. They learn a lot about our past and what our ancestors were like through archaeology.
No I do not think they made the right decision. Basically what the Court decided is almost exactly what Hitler did to Jewish people — ironically this happened around the same time. Because of the decision to segregate Japanese people, they were put into Interment camps which is almost equivalent to Nazi Germany’s concentration camps.
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Every major advance in agriculture has allowed global population to increase. Early farmers could settle down to a steady food supply. Irrigation, the ability to clear large swaths of land for farming efficiently, and the development of farm machines powered by fossil fuels allowed people to grow more food and transport it to where it was needed.
She's got a monologue somewhere talking about it, she first wanted to become a doctor after seeing one of her friends get hurt when they were playing outside. She thought that he was going to die, but then the hospital came and sewed him up and saved his life and that's when she decided that that was what she was going to do.
History is really important because it helps us understand why we live the way we are living and why we are where we are as a species and country.