Definition
Cultural influence is the disproportionate impact that migrants and their descendants exert on the receiving culture — its music, language, food, art, sport, vernacular, and political idiom — far in excess of the group's share of the population.
A culture rarely absorbs migration without being changed by it. Even when the receiving society denies the influence at the time, the artifacts persist: a song nobody can stop singing, a dish that takes over a city's diners, a slang word that becomes the national common tongue. The demographic share is small; the cultural footprint is enormous.
Why it matters
How it works
The Great Migration moved roughly six million Black Americans from the rural South to the urban North and West over six decades. By demographic share they were a minority of the United States population throughout the period. The cultural ledger of that migration is staggering. Blues moved from the Mississippi Delta to Chicago and electrified. Jazz traveled from New Orleans up the Mississippi to Kansas City and on to Harlem. Gospel reinvented itself in Chicago. Rhythm and blues, soul, funk, disco, and hip-hop are all, in one way or another, downstream of those moves. So is much of twentieth-century American literature, sport, dance, fashion, and the rhetorical style of its political left and right.
The mechanism is rarely the single migrant. It is the encounter, sustained over a generation, between two cultural inheritances in one neighborhood — the Southern migrants' inheritance and that of the urban North they entered. Children grew up bilingual in a non-trivial sense: they spoke both inheritances and synthesized them. Robert Johnson's Delta blues entering an urban context met electric amplification and a city's nightlife and produced Muddy Waters and then Chuck Berry and then the British Invasion that fed back into America. Each step is local; the cumulative effect is global.
What gives the dynamic its sharpness is the simultaneous exclusion of the people producing the culture. The receiving society could embrace the music while still confining the musicians to particular neighborhoods, schools, and theaters. Cultural influence and structural exclusion are not opposites; they often coexist for decades, and the inequity of that coexistence is itself part of the legacy.