grapes of wrath movie quistions

i need answers for the next following 5 questions from the move Grapes of wrath the movie available online for 2.99$

the questions:

1. Why do the Joads get kicked off of their farm? Why does Muley choose to stay behind?

2. What are the Joads’ interactions with the police like? Why?

3. How did the federal government campground differ from the lodging provided by private employers?

4. What do you think are the filmmaker’s main objectives? (i.e. what do you think the director wanted the audience to feel?)

5. Is this ultimately an optimistic or pessimistic story? Why?