supply of cheap labor and avoid having to import heavy machinery. Small backyard steel furnaces were built in every commune where peasants produced small nuggets of cast iron made from scrap metal. Simultaneously, peasant communities were collectivised. The Great Leap Forward is now widely seen, both within and outside China, as a major economic disaster. Peasants often abandoned farming to produce steel or work in other industrial production. The three years between 1959 and 1962 were known as the "Three Bitter Years," the Three Years of Natural Disasters (although this name is now rarely used in China), and the Great Leap Famine, as the Chinese people suffered from extreme shortages of food. The period had a profound impact on the history of rural life in China. Post-Mao Zedong era Under Deng Xiaoping, urbanization in China has expanded at an unprecedented speed since the declaration of "Reform and Open Policy". new policies in China's economy shifted the approach from collective farming to household-based production quotas, in many ways reversing decades of collectivization efforts. In many areas of China, especially southern and coastal China, the standard of living improved dramatically after Deng's reforms. Township and Village Enterprises brought industrial production to rural areas—predominantly along the southern coasts, helping open these rural communities to greater economic prosperity. (The idea of industrial production in rural areas had been attempted under Mao but with much more limited success; for instance, industrial plants in highly remote areas found their ultimate production efforts hampered.) Soon, however, an imbalance appeared where northern, interior, and western China remained at a far lower degree of economic development, a situation which persists to the 21st century. However, there are multiple, complex factors contributing to this state of affairs. For instance, distances are much farther, and geography often more challenging, in western and interior regions. Population is more spread out; social structures may also play a role, in that the demographics and social structures of these regions often differ significantly from those of coastal China. Deng Xiaoping's reforms included the introduction of planned, centralized management of the macro-economy by technically proficient bureaucrats, abandoning Mao's mass campaign style of economic construction. Deng sustained Mao's legacy to the extent that he stressed the primacy of agricultural output and encouraged a significant decentralization of decision making in the rural economy teams and individual peasant households. At the local level, material incentives, rather than political appeals,