When it comes to the us becoming a imperial power, their main goal was economic expansion. now their ideals were good but since they started being an imperial power the economy has gone rather worse. so to answer your question their goals were good not have not been achieved.
Correct me if I'm wrong but I think the answer is:
"They were white musicians and composers who were heavily influenced by jazz."
Hope this helps and God bless you!
I don’t know much about this but try googling it I’m sure ur gonna find something
