Final answer:
Hip-Hop music and its political influence have been most integrated into American culture, spreading from the Bronx to worldwide, and influencing social movements and political activism. Despite facing barriers to diffusion, it has become a medium for storytelling and resistance, virtually omnipresent in today's cultural landscape.
Step-by-step explanation:
The aspect of Hip-Hop that has been most integrated into American culture is its music and political influence. Emergent from self-taught street musicians in the 1970s, hip-hop combined elements of funk, beats, and lyrics to express the intense and honest experiences of inner-city life, appealing to a diverse audience and influencing movements like the Black Lives Matter.
As it spread through hierarchical diffusion, hip-hop transcended barriers, geographically and culturally, making a significant impact even in small towns and internationally. It has fostered a distinct political culture leading to activism and has faced opposition in areas with heavy censorship. Despite these challenges, hip-hop's widespread adoption reflects its resilience and capacity to express diverse narratives, as seen in Native American and Arab hip-hop communities, which use the genre for storytelling and resistance.