Where did jazz start and how did it move from being a regional music to being a national music?

Jazz first began in New Orleans.

New Orleans has been a great travel hot-spot for years due to their attitude toward tourists and the attractions they have there.

When you go somewhere on a vacation you try new things. New restaurants, hotels, and attractions.

I bet you anything people came across a restaurant or two that played Jazz music.

When they went home they introduced their friends and family to Jazz.

I hope this helps <3