Angola overtook Nigeria as the largest oil producer in sub-Saharan Africa in May, according to data from the Organization of Petroleum Exporting Countries (OPEC), by pumping 1.1 million barrels a day. Angola’s production fell from 1.183 million barrels a day pumped in April to 1.162 million in May, but benefited from an even greater drop by Nigeria, whose production fell from 1.219 million barrels in April to 1.024 million the following month, thus losing the