1) The decline of the American Dream in the 1920s
2) The Hollowness of the Upper Class
3) The Valley of Ashes
I hope that's help !
I wish I could have a chance of study abroad this summer.

Answer:
the basic labor unions is the fight for better wages, reasonable hours and safer working conditions.
Explanation:
Pretty general
If you have any questions feel free to ask in the comments - Mark