Our first African-American billionaire on this list is a man who has made a vast fortune in the telecommunications industry. Across the pond in Great Britain, Ibrahim founded a company called Celtel. Mainly, Celtel acts as a mobile phone operator in Africa. As Celtel grew, the value of the company also increased. Finally, in 2005 (after seven years in business), Mohammed sold Celtel for a whopping $3.4 billion. Two years later, Ibrahim set up a foundation in his name to assist governance in Africa. Now sitting at a value of $1.1 billion, it seems as if Ibrahim is doing positive things with his money. As with the foundation, he has also created what is called the “Mo Ibrahim Index”. This index helps evaluate a nation’s performance in various sectors (economics, government, etc).