NIGERIA - JULY 29: A local Fulani herdsman grazes his cows near Graham Hatty's cassava farm in Shonga, Nigeria, on Tuesday, July 29, 2008. White farmers fleeing Robert Mugabe?s land seizures in Zimbabwe, have decided to settle in Shonga in central Nigeria, hoping to spark an agricultural revolution in Africa?s most populous country with modern farming techniques. (Photo by George Osodi/Bloomberg via Getty Images)
