History of Bolivia to 1809 reduction in silver output. After 1700 only small amounts of bullion from Upper Peru were shipped to Spain. Kings from the Bourbon Dynasty in Spain tried to reform the colonial economy in the mid-eighteenth century by reviving mining. The Spanish crown provided the financial support necessary to develop deeper shafts, and in 1736 it agreed to lower the tax rate from 20 to 10 percent of the total output. The crown also helped create a minerals purchasing bank, the Banco de San Carlos in 1751 and subsidized the price of mercury to local mines. The foundation of an academy of
Prince Gabriel of Bourbon-Two Sicilies membership in the historical House of Bourbon-Two Sicilies, the title of "Principe de Borbón" and the style of "Royal Highness" were specifically accorded to Gabriel de Borbón and to those of his children born of marriage contracted with the Spanish sovereign's authorization, by a Spanish royal decree issued 19 August 1920. Prince Gabriel of Bourbon-Two Sicilies Prince Gabriele of Bourbon-Two Sicilies (Gabriele Maria Giuseppe Carlo Ignazio Antonio Alfonso Pietro Giovanni Gerardo di Majella et Omni Sancti; 11 January 1897, Cannes, France – 22 October 1975, Itu, Brazil,) was a prince of the deposed dynasty which ruled the Kingdom of the