Final answer:
The dominance of rock and roll after WWII led to the rise of youth culture and rebellious attitudes, influenced social integration, and had a significant economic and cultural impact.
Step-by-step explanation:
The outcome of the dominance of rock and roll in the popular music market after World War II was the rise of youth culture and rebellious attitudes. This genre provided an outlet for teenagers to express their independence and challenge the status quo of adult society.
Rock and roll blazed the trail in blurring racial lines and promoting social mingling between black and white teens.
Moreover, the economic demand for this music led to record companies, previously hesitant to sign black musicians, to capitulate and offer contracts regardless of race, thus fueling further integration and advancements in civil rights movements.
As the popularity of rock and roll surged, it became a symbol of generational consciousness, reflecting the baby boomers' desire for identity and rebellion against established adult authority.
Television programs like the Ed Sullivan Show and American Bandstand played a pivotal role in giving exposure to diverse artists and fostering interactions between youths of different races.
The cultural impact of rock and roll would eventually lead businesses to produce hundreds of millions of rock albums, signifying not just a musical trend, but a powerful economic and social force of the 1950s.