N'afọ 1870, Rockefeller kpochapụrụ mmekọrịta ahụ ma tinye Standard Oil na Ohio. N'ime mbido 10,000 mbụ, John D. Rockefeller natara 2,667; Harkness natara 1,334; William Rockefeller, Flagler, na Andrews natara 1,333; Jennings natara 1,000, na ụlọ ọrụ nke Rockefeller, Andrews & Flagler natara 1,000. Rockefeller họọrọ aha "Standard" dị ka ihe nnọchianya nke "ụkpụrụ" a pụrụ ịdabere na ya nke ọrụ na ọrụ dị mma nke o chere maka mmanụ mmanụ. Ajụjụ: Olee otú Standard Oil si malite?
dị ka Ohio mmekọrịta