Sulfuric acid the Hellenistic alchemical works of Zosimos of Panopolis, in the treatise "Phisica et Mystica", and the Leyden papyrus X. Medieval Islamic era alchemists, Jābir ibn Hayyān (c. 721 – c. 815 AD, also known as Geber), Razi (865 – 925 AD), and Jamal Din al-Watwat (d. 1318, wrote the book "Mabāhij al-fikar wa-manāhij al-'ibar"), included vitriol in their mineral classification lists. Ibn Sina focused on its medical uses and different varieties of vitriol. Sulfuric acid was called "oil of vitriol" by medieval European alchemists because it was prepared by roasting "green vitriol" (iron(II) sulfate) in an iron retort. There are
History of the Venezuelan oil industry in Venezuela has suffered from a poor oil market and Venezuela’s insufficient funding of the industry. Venezuela’s nationalistic oil policies have not succeeded in making them more independent from their oil customers. In 2016, the United States imported 291,461,000 barrels of oils from Venezuela, an amount consistent with imports in the five years prior. To assuage the oil price decline which began back in June 2014 and continues through to today, President Maduro printed more currency, resulting in inflation as high as 700% of what the inflation rate was in 2014.. The Economic policy of the Nicolás Maduro administration did