The Great Depression, despite the concentration of its impact on the industrialized world, was also exceptionally damaging in the rural colonies. Agricultural prices fell much harder and faster than those of industrial goods. From around 1925 until World War II, the colonies suffered. The colonial powers concentrated on domestic issues, protectionism and tariffs, disregarding the damage done to international trade flows. The colonies, almost all primary "cash crop" producers, lost the majority of their export income and were forced away from the "open" complementary colonial economies to "closed" systems. While some areas returned to subsistence farming (British Malaya) others diversified (India, West Africa), and some began to industrialize. These economies would not fit the colonial straitjacket when efforts were made to renew the links. Further, the European-owned and -run plantations proved more vulnerable to extended deflation than native capitalists, reducing the dominance of "white" farmers in colonial economies and making the European governments and investors of the 1930s co-opt Indigenous elites – despite the implications for the future. Colonial reform also hastened their end; notably the move from non-interventionist collaborative systems towards directed, disruptive, direct management to drive economic change. The creation of genuine bureaucratic government boosted the formation of Indigenous bourgeoisie.