There are many typical characteristic for 20s:
I WW and some of "reorganization" of the word which caused:
- new trends in makeup and fashion - changes when it comes to wearing corsets, or pants (by woman), more independent style, very brave as for that periond of time (e.g. flapper girls); new hairstyles for woman (much more practical), femme-fatale makeup
- great era of silent movies, cabarets
- new trends in music and dance - jazz, swing, etc
We can simply say that after the I WW began a new order not only in political connections but also in people's lifestyle.