Africa still lags far behind other regions on most key measures. But that's about to change. By 2025 spending by African consumers and businesses will exceed $5 trillion, and by 2035 Africa will have the world's largest urban population and a workforce larger than China's or India's. That points to exciting opportunities for global and Africa-based companies looking to access new growth markets--and to build large, profitable businesses in sectors ranging from resources to manufacturing to services.