Inspired by my Japanese-Ethiopian Axis and the current Japanese-Ethiopian alliance TL I'm writing, I thought of this.
What if Italy, Japan and Ethiopia had managed to establish an alliance not too unlike that of Germany and the Soviet Union throughout the 20s and 30s?
Ethiopia gets to pump out Africa for the Africans propaganda, and funds lots of anti colonial guerrillas depending on the financial largesse of the alliance and how strongly Britain or France would be willing to respond.
The biggest cultural impact might be on black nationalism and rastafarianism in the US and the Americas. Rastafarians worship an Ethiopian prince as a living god, (Ras Tafari = Prince Tafari) and view a "return to Africa as a spiritual state. ATL might associate rastafarianism with authoritarian rule the way pop culture connects European paganism and nazism.
Black nationalists in the US might be drawn to Ethiopian Orthodox Christianity rather than Islam as in OTL. People like Malcom X (pre-Hajj) were attracted to Islam because they say Christianity as a white man's/colonizers' religion. Instead there might be more African Americans drawn to a new Americanized form of orthodox Christianity.
This could make for interesting propaganda if people like Marcus Garvey or Malcom X become anti colonial guerrillas in "Nat Turner Battalions" or "Haile Selassie Brigades" as a mix of Che Guevara/Subas Chandra Bose analogues.