Paul Robeson articulates in sound bites (!) that the chief momenta of American primitive accumulation of capital is slavery ; a la Marx Chapter 31 Capital I

https://www.marxists.org/archive/marx/works/1867-c1/ch31.htm

"The discovery of gold and silver in America, the extirpation, enslavement and entombment in mines of the aboriginal population, the beginning of the conquest and looting of the East Indies, the turning of Africa into a warren for the commercial hunting of black-skins, signalised the rosy dawn of the era of capitalist production. These idyllic proceedings are the chief momenta of primitive accumulation. On their heels treads the commercial war of the European nations, with the globe for a theatre. It begins with the revolt of the Netherlands from Spain, assumes giant dimensions in England’s Anti-Jacobin War, and is still going on in the opium wars against China, &c."