10. Alex Karp: $1.1 billion Karp is the co-founder and CEO of the software firm Palantir Technologies

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9. Michael Jordan: $1.7 billion NBA great Jordan, one of the nine Americans on the list, still has sponsorship deals with Hanes, Gatorade and Upper Deck 19 years after retiring from basketball

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8. Oprah Winfrey: $2.6 billion In addition to the media, entertainment and business empire she’s built, Winfrey owns shares in Weight Watchers and has a partnership with Apple.

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7. Strive Masiyiwa: $3 billion Masiyiwa “overcame protracted government opposition to launch mobile phone network Econet Wireless Zimbabwe in his country of birth in 1998,” according to Forbes.

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6. Patrice Motsepe: $3.3 billion Motsepe was the first Black African to appear on the Forbes list. He became a billionaire in 2008

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5. David Steward: $5.8 billion Steward is co-founder and chairman of World Wide Technology, an $11.2 billion IT provider whose customers include Citi, Verizon and the federal government

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4. Robert F. Smith: $6.7 billion Smith made his fortune through the private equity firm, Vista Equity Partners, which he founded in 2000.

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3. Abdulsamad Rabiu: $6.9 billion Rabiu is the founder of BUA Group, a Nigerian conglomerate with interests in sugar refining, cement production, real estate

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2. Mike Adenuga: $7.3 billion Adenuga, Nigeria’s second-richest man, made his first million at 26 selling lace and distributing soft drinks, according to Forbes.

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1. Aliko Dangote: $14 billion Africa’s richest man, Aliko Dangote saw his fortune grow from around $11.5 billion on last year’s list

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