It originated in the United States.
Source: wikipedia.com
Rock 'n' Country was created in 1976.
Elvis Presley.
jazz
Rock-n-roll was a meld of country and western, rhythm and blues, and jazz, and grew out of each. Rock-n-roll encouraged country performers to play harder, and to expand their scope. (Or sometimes to retreat.)
U.S and U.K!
America is the country with the most Rock N' Roll fans. It started in america. However modern rock is spreading throughout the world. Rock N' Roll can be traced back to early blues musicians like Robert Johnson in the early 1900s.
Elvis Presley sang genres of Rock n Roll, Gospel, Country and Rock.
Rock 'n Roll, Country and Jazz
blues, rock n' roll, and country
As the rock 'n roll group, COUNTRY JOE & THE FISH's song said, "...come on Mother's through out the land, pack your boys up for Vietnam..."
N i g g e r l a n d
Rock n roll & Jazz played the music role in the 1950s.