Answer:
My guess would be voting rights.
Explanation: During the congress it was a voting time so it would be related.
This is an example of a metaphor.
In "A Raisin in the Sun" shows Mama's dream someday of having her own little garden at the back of her own house. Though she's close at quitting and giving up her dream, nurturing her plants simply implies that she's not giving up her dream, herself and of course, her children as well.
