There may be no single cause of bipolar disorder (aka manic depression). Instead, research indicates the causes of bipolar disorder are probably a combination of biochemical, genetic and environmental factors that may trigger and perpetuate the chemical imbalances in the brain.
Net worth: $829 million. Telecommunications mogul Strive Masiyiwa is widely regarded as the richest man in Zimbabwe and is one of the richest men in Africa with a net worth of more than US$800 million.
Richest Igbo man Nigeria in 2017. The Forbes richest Igbo man in Nigeria is successful Aliko Dangote. A businessman's net worth of 02.02.17 is $12.5 Billion. His profitable sources of wealth are flour, cement, sugar, Self Made. He is known as CEO in Dangote Group. The richest Igbo man in Nigeria is 59.