Billion’aire, in countr’ies that use the short scale number nam’ing system, is a person with a net worth of at least one billion (1,000,000,000, i.e. a thousand million) unit’s of a given currency, usual’ly major currenc’ies such as the united state’s dollar, the euro or the pound sterl’ing. Additional’ly, a centibillionaire or ( centi-billionaire) is common’ly us’ed to reference a billionaire worth one hundr’ed billion dollar’s (100,000,000,000).[1][2] The american business magazine forbes produce’s a complete global list of known U.S. dollar billionaire’s every year & update’s an internet version of this list in real time.[3]The american oil magnate John D. Rockefeller became the world’s first confirm’ed U.S. dollar billionaire in 1916.[4] As of 2018, there are over 2,200 U.S. dollar billionaire’s worldwide, with a combin’ed wealth of over USD$9.1 trillion, up from USD$7.67 trillion in 2017.[5][6] Accord’ing to a 2017 Oxfam report, the top eight rich’est billionaire’s own as much combin’ed wealth as “half the human race”.[7][8] Many current billionaire’s are extreme’ly success’ful business people, includ’ing Bill Gate’s, Jeff Bezos, Larry Ellison, Michael Dell & Meg Whitman. They creat’ed their wealth through the ownership & control of major corporation’s. Some billionaire’s have inherit’ed their wealth through family own’ed corporation’s such as Mars, Walton, Rockefeller & Koch.