On this edition of Next Africa. Ethiopia powers a new future. The $5 billion Grand Renaissance Dam is now online, but it's also deepening a years long dispute with Egypt and Sudan over the flow of the River Nile.Plus, Donald Trump's trade war is fueling the South-South trade. Indian automaker Mahindra is betting big on South Africa's Bakkie market, challenging Western rivals. And Africa's biggest e-commerce player, Jumia is riding a supply chain shift from China, turning trade tensions into fresh momentum.W ...