The drops last year in the prices of oil and other commodities are threatening to stunt growth in poor African and Latin American nations that sought to use vast natural-resource wealth to climb the development ladder. During a decadelong boom, governments on those continents vowed to use a windfall from surging raw-material prices to lift the vast underclass. Governments that sought big development leaps by funding social-welfare programs and ambitious infrastructure initiatives, such as building roads, ports and power plants, may now have less money to do so. “The good-governance records in many [Latin American] countries were linked to commodity prices, and this will be tested by the end of the commodity boom,” said Jorge Castaneda, Mexico’s former foreign minister. The commodity-rich nations of Africa and Latin America are also […]