I NEED SOMEONE WHO IS EXPERT IN ECONOMICS (HISTORY OF THE 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. 

TEXT BOOK: Gary M. Walton Hugh Rockoff. History of the American Economy. 12th Edition, 2014.