Which factor push forward the popularity of rock music in america

American rock has its roots in 1940s and 1950s rock and roll, rhythm and blues, and country music, and also drew on folk music, jazz, blues, and classical music. American rock music was further influenced by the British Invasion of the American pop charts from 1964 and resulted in the development of garage rock.

The combination of electric guitars, drums, and bass.

Explanation:

b.) a 3-d model