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
Manchuria under Ming rule Manchuria under Ming rule Manchuria under Ming rule refers to the domination of the Ming dynasty over Manchuria, including today's Northeast China and Outer Manchuria. The Ming rule of Manchuria began with its conquest of Manchuria in the late 1380s after the fall of the Mongol Yuan dynasty, and reached its peak in the early 15th century with the establishment of the Nurgan Regional Military Commission, but the Ming power waned considerably in Manchuria after that. Starting in the 1580s, a Jianzhou Jurchen chieftain named Nurhaci (1558–1626), began to take control of most of Manchuria over the next several decades,