History of Paraguay its capital, and Río de la Plata, with headquarters in Buenos Aires. With this decision, Asunción lost control of the Río de la Plata estuary and became dependent on Buenos Aires for maritime shipping. In 1776, the crown created the Viceroyalty of Río de la Plata; Paraguay, which had been subordinate to Lima, now became a provincial outpost of Buenos Aires. Located at the periphery of the empire, Paraguay served as a buffer state. The Portuguese blocked Paraguayan territorial expansion in the north, native tribes blocked it – until their expulsion – in the south, and the Jesuits blocked it
Economy of Paraguay hydropower plant, Yacyretá, with Argentina. Paraguay uses only a small portion of the energy it generates through Itaipú and Yacyretá. In 2002 Paraguay generated more than 48 billion kilowatt-hours of energy. It consumed only 2.5 billion kilowatt-hours while exporting 45.9 billion kilowatt-hours. Paraguay will have even more hydroelectricity to export when planned new turbines are installed at Itaipú and the Yacyretá dam is fully completed. In 2007 electricity production rose to 70 TWh, and exports reached 64 TWh which put Paraguay in second place worldwide as an exporter of electrical power (And in the first place as a net exporter