Who had a hand in creating hip-hop? Of bringing it to the main stage or mass audiences?

Brother-sister duo DJ Kool Herc, and Cindy Campbell additionally hosted DJ parties in the Bronx and are credited for the rise in the genre.[14] Hip hop culture has spread to both urban and suburban communities throughout the United States and subsequently the world.[15] These elements were adapted and developed considerably, particularly as the art forms spread to new continents and merged with local styles in the 1990s and subsequent decades. Even as the movement continues to expand globally and explore myriad styles and art forms, including hip hop theater and hip hop film, the four foundational elements provide coherence and a strong foundation for hip hop culture.

Explanation:

I looked it up

answer:   2 1/4 pounds

explanation: 4 1/2 - 2 3/4