Kampani yoyera nsapato yoyera ndi kampani yotsogola yotsogola yomwe yakhalapo kwanthawi yayitali kwambiri - ndipo imayimira makampani ambiri apamwamba. Mawuwa amagwiritsidwa ntchito kwambiri ku United States kuposa mayiko ena. Nthawi zambiri, kumakhala malamulo, zowerengera ndalama, kubanki, kubweza ngongole, kapena kampani yolangizira oyang'anira. Amakhulupirira kuti mawuwa adachokera koyambirira kwa nsapato zoyera, nsapato zoyera za Oxford. Awa anali otchuka pakati pa ophunzira ku Yale University komanso m'makoleji ena a Ivy League m'ma 1950. Mosakayikira, ophunzira ovala bwino ochokera m'masukulu osankhika anali otsimikiza kupeza ntchito m'makampani otchuka atangomaliza maphunziro awo.