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
Bourbon-Busset today, instead of me." Since 2001, the Head of the House of Bourbon-Busset is Charles de Bourbon, Count of Busset (born 1945), who is a civil engineer of the "Ecole des Mines de Paris", and Mayor of Ballancourt-sur-Essonne (1998-2014). He is the son of Jacques de Bourbon-Busset. Bourbon-Busset The Bourbon-Busset family is an illegitimate branch of the House of Bourbon, being thus agnatic descendants of the Capetian dynasty. Historically, they have been regarded as non-dynastic since decisions rendered by Louis XI of France. Possibly, however, the family may be canonically legitimate, in which case it is the most senior extant