Answer:
Are preferences of teenagers around the world regardless of where they live.
Step-by-step explanation:
Most teenagers around the world have a heightened sense of appreciation for fashion and music, and also desire novelty, artistic expression, and individuality.
This has been studied in many disciplines, and has many (partial) explanations. In psychology, this phenomenon is said to emerge due to the teenagers' necessity for self-expression, because they are in a period of their lives in which they want to form their own identidy, different from that of their parents, by taking as many influences from the outside world as possible.