Final answer:
Rock and roll emerged from African American traditions and captivated a broad audience, leading to changes in racial expectations and aiding in the end of segregation. Teens across racial lines were united by common musical interests, where technology and popular media played key roles in crossing racial barriers. As a result, music brought different races together, and record companies signed artists regardless of their race.
Step-by-step explanation:
The birth of rock and roll played a significant role in blurring racial lines and pushing towards the end of segregation in the United States. This genre of music emerged from African American musical traditions and quickly captured the attention of teenagers, becoming a symbol of rebellion and change. White teens, who were the primary consumers during the 1950s, embraced what was considered 'black' music, thus defying racial expectations and segregationist norms of the era.
Advancements in technology allowed rock and roll to reach a wider audience across racial divides. White artists like Elvis Presley brought elements of rhythm and blues into the mainstream, attracting both white and black audiences. Television programs like the Ed Sullivan Show and American Bandstand showcased musicians of different races, facilitating a social intermingling that was previously uncommon.
Rock and roll promoted the notion that good music transcends racial barriers, influencing the youth to challenge the status quo. As record companies pursued profits, they began to disregard racial divisions, signing both black and white artists. By the end of the 1950s, rock and roll had not only made a lasting impact on music but also on American culture and social attitudes towards race.