Manufactured exports, by most definitions, accounted for less than 5 percent of total exports; when semiprocessed agricultural products were included, however, that figure reached 77 percent. The growth of the country's manufacturing industries was hampered by numerous structural obstacles. These included a small internal market, limited physical infrastructure, costly access to seaports, a historical lack of energy production, and the openness of Paraguay's economy to the more industrialized economies of Brazil and Argentina. Another significant factor was the ubiquity and profitability of smuggling operations, which encouraged importing and reexporting rather than production. Paraguay's earliest manufacturing industries processed hides and leather from its abundant cattle and tannin from quebracho trees. Small-scale manufacturing, especially textiles, flourished under the Francia dictatorship, when the nation's borders were closed. The War of the Triple Alliance, however, devastated what little industry and infrastructure the country had, causing Paraguay to enter the twentieth century as an almost completely agricultural society. Land sales to foreigners stimulated increased agricultural processing in the early twentieth century, including meat packing and the processing of flour, oilseeds, sugar, beer, and pectin extract. After the early 1900s, small-scale manufacturing in all subsectors grew at a slow, but steady pace, with some of the fastest growth occurring because of the shortages during World War II. The government's role in promoting industry increased in the postwar era, and in 1955 the Stroessner government undertook the country's first industrial census. Over the next twenty years, the government enacted a number of industrial incentive measures, the most important of which was Law 550. Law 550 promoted exportoriented industries or those that would save foreign exchange. It also provided liberal fiscal incentives for companies to develop specific areas of the country, especially the departments of Alto Paraguay, Nueva Asunción, Chaco, and Boquerón. Incentives for business were related mostly to import-duty exemptions, but they included a variety of tax breaks and placed no restrictions on foreign ownership. Approximately one-fourth of all new manufacturing investment from 1975 to 1985 was registered under Law 550. Most foreign investments originated from Brazil, West Germany, the United States, Portugal, and Argentina in that order of importance. The dynamic processes of agricultural colonization and hydroelectric development, combined with such attractive industrial incentives, caused manufacturing to grow at an unprecedented rate in the late 1970s and early 1980s. Unlike many other Latin American governments, which followed an import-substitution industrial policy, the Paraguayan government had played a minimalist role in the economy through most of the postwar era, curtailing import tariffs and maintaining a realistic exchange rate.