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-Penthièvre Bourbon-Penthièvre The House of Bourbon-Penthièvre was an illegitimate branch of the House of Bourbon, thus descending from the Capetian dynasty. It was founded by the duc de Penthièvre (1725–1793), the only child and heir of the comte de Toulouse, the youngest illegitimate son of Louis XIV of France and the marquise de Montespan, and his wife, Marie Victoire de Noailles, the daughter of Anne Jules de Noailles, duc de Noailles. The House of Bourbon-Penthièvre, sometimes called: House of Bourbon-Toulouse-Penthièvre, had been called the House of Bourbon-Toulouse during the lifetime of the duc de Penthièvre's father, the "comte de Toulouse". The