Jewish craftsmanship evolved from agriculture to trade, to alchemy, and metallurgy, medicine. They learned alchemy and metallurgy from the Egyptians and Babylonians, they also learned health remedies like the use of Salix the bark of a tree to reduce fever, and about 700 magical formulas and folk remedies like those written in the Eber’s papyrus. They have had a long continuous history of healing people. The use metalsmithing in the use of household items and forged swords. The Spanish Court had a Jewish physician. The Spanish rulers sent some Converso Jews to Latin America, to oversee the mining of gold, silver, copper, iron, lead, platinum, and tin. This is another instance of the Jewish connection with Latin American history.