The Frankfurt School?

Answer of the following questions
1. What (and where) was the Frankfurt School?
2. Who was the major influence on the Frankfurt School?
3. Why didnt the working class rise up?
4. What was the idea of critical theory?
5. How and why did the Frankfurt School encounter the United States of America?

Media: The Frankfurt School https://www.bbc.co.uk/programmes/b00pr54s