Which decade consisted mainly of jazz, big band, and swing, reflecting the pain of World War Il while trying to remain upbeat and looking toward a positive future?
1930
1940
1950
1960
1970
1980
1990
2000

1940s I think

you didnt add any sort of groups or any options, you can edit it and then people can try to answer now its kinda hard.

hope this gives you a heads up why you arent answered. : d

have a great rest of your day!