Jumia Technologies NYSE: JMIA stock is jumping, and the move is the start of a much larger rally that could last for decades. Today, Jumia is a small, African-based eCommerce portal. Over time, it will grow into a giant. African economies are projected to grow at a globe-leading average of 3.7% this year, accelerate to over 4.% next year, and sustain acceleration for the foreseeable future. Most nations are forecasted to grow faster than 5% this year and accelerate next, compounded by a rapidly growing midd ...