Jazz is known all over the world as an American musical art form and that's it. No America, no jazz. I've seen people try to connect it to other countries, for instance to Africa, but it doesn't have a damn thing to do with Africa.
You can't seperate modern jazz from rock or from rhythm and blues - you can't seperate it. Because that's where it all started, and that's where it all come from - that's where I learned to keep rhythm - in church.