Complex economic and institutional factors affected Japan's postwar growth. First, the nation's prewar experience provided several important legacies. The Tokugawa period (1600-1867) bequeathed a vital commercial sector in burgeoning urban centers, a relatively well-educated elite (although one with limited knowledge of European science), a sophisticated government bureaucracy, productive agriculture, a closely unified nation with highly developed financial and marketing systems, and a national infrastructure of roads. The buildup of industry during the Meiji period to the point where Japan could vie for world power was an important prelude to postwar growth and provided a pool of experienced labor following World War II.

Second, and more important, was the level and quality of investment that persisted through the 1980s. Investment in capital equipment, which averaged more than 11% of GNP during the prewar period, rose to about 20% of GNP during the 1950s and to more than 30% in the late 1960s and 1970s. During the economic boom of the late 1980s, the rate still hovered around 20%. Japanese businesses imported the latest technologies to develop the industrial base. As a latecomer to modernization, Japan was able to avoid some of the trial and error earlier needed by other nations to develop industrial processes. In the 1970s and 1980s, Japan improved its industrial base through technology licensing, patent purchases, and imitation and improvement of foreign inventions. In the 1980s, industry stepped up its research and development, and many firms became famous for their innovations and creativity.

Japan's labor force contributed significantly to economic growth, not only because of its availability and literacy but also because of its reasonable wage demands. Before and immediately after World War II, the transfer of numerous agricultural workers to modern industry resulted in rising productivity and only moderate wage increases. As population growth slowed and the nation became increasingly industrialized in the mid-1960s, wages rose significantly. However, labor union cooperation generally kept salary increases within the range of gains in productivity.

High productivity growth played a key role in postwar economic growth. The highly skilled and educated labor force, extraordinary savings rates and accompanying levels of investment, and the low growth of Japan's labor force were major factors in the high rate of productivity growth.

The nation has also benefited from economies of scale. Although medium-sized and small enterprises generated much of the nation's employment, large facilities were the most productive. Many industrial enterprises consolidated to form larger, more efficient units. Before World War II, large holding companies formed wealth groups, or zaibatsu, which dominated most industry. The zaibatsu were dissolved after the war, but keiretsu?large, modern industrial enterprise groupings?emerged. The coordination of activities within these groupings and the integration of smaller subcontractors into the groups enhanced industrial efficiency.

Japanese corporations developed strategies that contributed to their immense growth. Growth-oriented corporations that took chances competed successfully. Product diversification became an essential ingredient of the growth patterns of many keiretsu. Japanese companies added plant and human capacity ahead of demand. Seeking market share rather than quick profit was another powerful strategy.

Finally, circumstances beyond Japan's direct control contributed to its success. International conflicts tended to stimulate the Japanese economy until the devastation at the end of World War II. The Russo-Japanese War (1904-5), World War I (1914- 18), the Korean War (1950-53), and the Second Indochina War (1954-75) brought economic booms to Japan. In addition, benign treatment from the United States after World War II facilitated the nation's reconstruction and growth.

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