Fin about bank

I need an explanation for this Economics question to help me study.

Watch movies The Big Short and Inside Job, and write an essay about the potential role played by commercial banks and investment banks.

You should have the following components in your essay: 1) what banks were supposed to do; 2) what they actually did; 3) what the consequences are; 4) whether and how their business model changed after the financial crisis. The movies would be only starters, I recommend you to use other sources like google or newsletters to supplement your analysis.

Other Requirements:

1. You should relate your essay to at least three chapters in the textbook;

2. Page length: greater than 8 (title page does not count);

3. No more than double space;

4. Font size equal to or smaller than 12;

5. Submission: word or PDF;