How did the richest people on the planet make their billions?
How Peter Thiel made his fortune from huge tech companies then renounced Silicon Valley
How American businesswoman Doris Fisher and her husband founded a clothing empire
Mexican telecom company boss Carlos Slim Helú was once the richest person on Earth
How Russian oligarch Roman Abramovich got rich, then got sanctioned
How Indian multinational conglomerate boss Mukesh Ambani built Asia's biggest fortune
How Jack Ma brought ecommerce to China by creating online mega-platform Alibaba
The founder of sporting apparel firm Patagonia made billions - then gave it all away
How the woman who founded dating apps Bumble and Tinder was briefly a billionaire
Aliko Dangote started a cement business, and went on to become Africa’s richest person
Sam Altman made a billion investing in tech start-ups, but made his name through AI
