Answer:
physical
Explanation:
Because you can see the evidence that is left behind. ( I hope that makes sense)
1- Great Depression- wheat or rice
2- Colonial period- indigo
3- Reconstruction Era- Tobacco
4- Silk- <span>Post-World War II
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Take these answers with a grain of salt. I am doing my best. But it has been a little while since I took that class.
Agriculture and animal husbandry.
The people could now live in one place. The rich and fertile land and rivers produced a surplus of food and water.
Hope this helps! :)