Nigeria, Africa’s largest exporter of oil, has recently been suffering from a severe oil shortage. The country’s fuel marketers and distributors have spent much of May on strike over government subsidies that have gone unpaid. In response to the strike, black market fuel prices have soared beyond the government’s mandated levels and businesses have suspended their operations. Even though the strike officially came to an end on Monday, Reuters reports that African telecom giant MTN Group is struggling to resume operations in Nigeria. Oil shortages, particularly when they are accompanied by broader troubles, are not normally occasions for mirth. But…