Rostam Azizi is new to the Forbes World's Billionaires list this year. The first and only billionaire in Tanzania, he owes the bulk of his fortune to his 35% stake in Vodacom Tanzania, the country's largest mobile phone company with more than 10 million subscribers. He also owns Caspian Mining, a contract mining company that provides services to giants like BHP Billiton and Barrick Gold. Caspian Mining also owns several mining concessions for gold, copper and Iron ore in Tanzania. Azizi's other assets include a stake in Dar es Salaam Port where he is a partner with Hong Kong investment holding company Hutchison Whampoa; a controlling stake in a newspaper publisher; and extensive real estate in Tanzania, Dubai, Oman and Lebanon. A fifth generation Tanzanian of Persian origin, he is a former member of Tanzania's parliament. He gives millions annually to groups focused on education, health and cultural preservation.