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
Fourteenth Dynasty of Egypt Nehesy, possibly the second ruler of the dynasty, to around 1700 BC as well Following the very short reign of Nehesy, most scholars–among them, Manfred Bietak and Kim Ryholt–agree that the Delta region was struck by a prolonged famine and perhaps a plague lasting until the end of the 14th dynasty. The same famine may have affected the 13th dynasty, which also exhibits instability and numerous ephemeral kings in its last 50 years of existence, from c. 1700 BC until 1650 BC. The weakened state of both kingdoms may explain, in part, why they fell rapidly to the emerging Hyksos