What is Michael Berstein’s theory of the causes of the Depression?

I don't know that persons theory, but I do know this. Depression is caused by loss of a loved one such as a pet, my dog Coco just recently passed. I know thats how you can get it.

Explanation:

the answer wold be b) travel among nations should be regulated by an international organization

- a.) african slaves and indentured servant’s

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