Getty ImagesOn the African continent, Uber now only operates in Egypt, Ghana, Kenya and South AfricaUber has announced it is closing its operations in Nigeria - Africa's most populous country - and the East African nation of Uganda with immediate effectThe global ride-hailing giant said it had come to the "difficult decision" after a thorough review of its business. It began operating in Nigeria in 2014 and in Uganda two years later.Uber taxi drivers in Nigeria have long complained that prices o...