write 6 pages essay about the great depression ( The History of American Economy )

Please provide a comprehensive answer to the following two questions:

1) Which were the main causes of the Great Depression?

2) Why did the Great Depression last so long?

Indications:

 To answer these questions, please start with our textbook information and then use at least one more reputable source for your research.

 Please use the bibliographic information recommended by the Modern Language Association (MLA).

 Length: at least six pages, including bibliography.

  For each question: write the question as a title and then provide your answers.