In economic terms these objectives meant industrialization, improvement of living standards, narrowing of income differences, and production of modern military equipment. As the years passed, the leadership continued to subscribe to these goals. But the economic policies formulated to achieve them were dramatically altered on several occasions in response to major changes in the economy, internal politics, and international political and economic developments. Recovery from war, 1949–52 In 1949 China's economy was suffering from the debilitating effects of decades of warfare. Many mines and factories had been damaged or destroyed. At the end of the war with Japan in 1945, Soviet troops had dismantled about half the machinery in the major industrial areas of the northeast and shipped it to the Soviet Union. Transportation, communication, and power systems had been destroyed or had deteriorated because of lack of maintenance. Agriculture was disrupted, and food production was some 30 percent below its pre-war peak level. Further, economic ills were compounded by one of the most virulent inflations in world history. As the Nationalists fled during their defeat in the Chinese Civil War, they stripped China of liquid assets including gold, silver, and the country's dollar reserves. Nationalists forces also attempted to firebomb industrial sites, but workers were able to stop them at many such locations. By the time the Nationalists were defeated, commerce had been destroyed, the national currency rendered valueless, and the economy was based on barter. The chief goal of the government for the 1949–52 period was simply to restore the economy to normal working order. The administration moved quickly to repair transportation and communication links and revive the flow of economic activity. The banking system was nationalized and centralized under the People's Bank of China. To bring inflation under control by 1951, the government unified the monetary system, tightened credit, restricted government budgets at all levels and put them under central control, and guaranteed the value of the currency. The CCP's success in overcoming hyperinflation and stabilizing prices became a major source of the new government's legitimacy. Commerce was stimulated and partially regulated by the establishment of state trading agencies (commercial departments), which competed with private traders in purchasing goods from producers and selling them to consumers or enterprises. State trading agencies served as a mechanism for re-creating and integrating markets and through this process of re-integration between urban and rural economies helped stabilize the value of money.