Africa today contributes some 1.5% to world trade and attracts little global investment. Still, the continent’s future is hardly as dark as that scenario might suggest. Africa has a growing middle class; governments that are enacting laws to stem corruption, and public and private institutions that are investing heavily in infrastructure. According to Elkanah Odembo, Kenya’s ambassador to the U.S., in another decade the continent will grow into a market of one billion consumers. He notes that companies that seize these opportunities today will reap dividends in the future.…