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
House of Bourbon-Maine century. House of Bourbon-Maine The House of Bourbon-Maine was an illegitimate branch of the House of Bourbon, being thus part of the Capetian dynasty. It was founded in 1672 when Louis-Auguste de Bourbon, duc du Maine was legitimised by his father, King Louis XIV of France. Louis-Auguste, founder of the House of Bourbon-Maine, was the first-born illegitimate son of Louis XIV of France and his mistress, Madame de Montespan. Immediately after his birth in 1670, he was entrusted to the care of Madame Scarron, one of his mother's acquaintances, who brought him to a private house on the rue de