Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  N'afọ 1911, gọọmenti etiti kewara Standard Oil n'ọtụtụ ebe n'okpuru Iwu Sherman Antitrust Act. Otu n'ime ụlọ ọrụ ndị ahụ, bụ́ Standard Oil Co. (California), mesịrị ghọọ Chevron. Ọ ghọrọ akụkụ nke "Ụmụnna Nwanyị Asaa", bụ́ ndị na-achịkwa ụlọ ọrụ mmanụ ala nke ụwa ná mmalite narị afọ nke 20. Na 1926, ụlọ ọrụ ahụ gbanwere aha ya na Standard Oil Co. nke California (SOCAL). Site na nkwekọrịta nke mmebi nke Standard Oil, na mbido Standard nke California nwere ike iji aha Standard naanị n'ime mpaghara ala ya nke mbụ nke oke osimiri Pacific, gbakwunyere Nevada na Arizona; na mpụga mpaghara ahụ, ọ ga-eji aha ọzọ. Taa Chevron bụ onye nwe akara ụghalaahịa Standard Oil na steeti iri na isii na ọdịda anyanwụ na ndịda ọwụwa anyanwụ US. Iji jigide ikike nke akara ahụ, ụlọ ọrụ ahụ nwere ma na-arụ ọrụ otu ụlọ ọrụ Chevron nwere akara ọkọlọtọ na steeti ọ bụla nke mpaghara ahụ, ọ bụ ezie na ọnọdụ ya na Kentucky edoghị anya mgbe Chevron wepụrụ ahịa mkpọsa na Kentucky na July 2010.Aha Chevron malitere iji ụfọdụ ngwaahịa mkpọsa ya na 1930s. A na-ejikwa aha Calso site na 1946 ruo 1955 na steeti ndị dị na mpụga mpaghara West Coast. Standard Oil Company nke California nọ na 75th n'etiti ụlọ ọrụ United States na uru nke nkwekọrịta mmepụta agha nke Agha IIwa nke Abụọ. Na 1933, Saudi Arabia nyere California Standard nkwekọrịta iji chọta mmanụ, nke dugara na nchọpụta mmanụ na 1938. N'afọ 1948, ụlọ ọrụ California Standard chọpụtara ebe a na-egwu mmanụ n'ụwa n'obodo Saudi Arabia, nke a kpọrọ Ghawar Field. California Standard's subsidiary, California-Arabian Standard Oil Company, toro n'ime afọ ndị gara aga wee bụrụ Arabian American Oil Company (ARAMCO) na 1944. N'afọ 1973, gọọmentị Saụt bidoro zụrụ ihe n'ụlọọrụ ARAMCO. Ka ọ na-erule afọ 1980, ụlọ ọrụ ahụ bụ nke ndị Saudis, na 1988, aha ya gbanwere na Saudi Arabian Oil Company <unk> Saudi Aramco. Standard Oil nke California na Gulf Oil jikọtara na 1984, nke bụ nnukwu njikọta na akụkọ ihe mere eme n'oge ahụ. Iji rube isi n'iwu US na-emegide ntụkwasị obi, California Standard wepụrụ ọtụtụ n'ime ọrụ Gulf na-arụ...  Ajụjụ: Gịnị ka California Standard mere iji rube isi n'iwu United States na-emegide ịkpa ókè?
wepụrụ ọtụtụ n'ime ụlọ ọrụ ndị na-arụ ọrụ nke Gulf, ma ree ụfọdụ ọdụ ụgbọ mmiri Gulf na ebe a na-eme ka mmiri dị na ọwụwa anyanwụ United States