Until the 1970s, Paraguay's eastern frontier was known primarily for its vast virgin forests and its domination by semifeudal enterprises engaged in extracting yerba maté and timber. After the 1970s, however, the extension of transportation networks, construction of the massive binational Itaipú hydroelectric works, and the release of state lands for private purchase paved the way for large-scale in-migration, settlement, and transformation of the region into a zone for commercial agriculture.

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... n less than two decades, the rapid expansion of soybean production into this area has catapulted Paraguay into the ranks of the world's major exporters of soybeans.