Several viceroys had scientific, political and economic impact on the Viceroyalty. Manuel de Amat y Juniet organized an expedition to Tahiti. Viceroy Teodoro de Croix also decentralized the government through the creation of eight "intendencias" in the area of the "Audiencia" of Lima, and two in the Captaincy General of Chile. Francisco Gil de Taboada reincorporated the region of Puno into the Viceroyalty of Peru. José de Armendáriz stimulated the production of silver and took steps against fraud, corruption and smuggling. Amat y Juniet established the first Regulation of Commerce and Organization of Customs rules, which led to the building of the customshouse in Callao. Teodoro de Croix collaborated in the creation of the "Junta Superior de Comercio" and the "Tribunal de Minería" (1786).