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
Saadi dynasty Saadi dynasty The Saadi dynasty or Saadian dynasty ( "as-saʿadiūn") was an Arab Moroccan dynasty, which ruled Morocco from 1549 to 1659. From 1509 to 1549, they had ruled only in the south of Morocco. Although still recognizing the Wattasids as Sultans until 1528, Saadian's growing power led the Wattasids to attack them and, after an indecisive battle, to recognize their rule over southern Morocco through the Treaty of Tadla. Their reign over Morocco began with the reign of Sultan Mohammed ash-Sheikh in 1554, when he vanquished the last Wattasids at the Battle of Tadla. The Saadian rule ended in