Why does music help calm people's minds or body?

Music is used all over the world, to express yourself, or to help calm the mind and body from stress. But how does music do all these things? Studies show that music helps with just about everything. Helps you think, helps with busy work to get your mind off of stress. Music is like an animal that you pet. So the animal calms you down when you pet it, right? Music does the same thing. Have you noticed that? And also some music helps with studying. Music is just awesome.

WWII

World War II was a tragic event in the history of the world. But why did it happen? There are a lot of reasons, but i think it was more of a religious reason than anything. Adolf Hitler had some problems with the Jews and their religion. He "persuaded" the rest of the Germans on the council to start murdering Jews. The Germans gassed and treated the Jews horribly.