This article describes the discovery and use of the South American cinchona bark and its main therapeutic (and toxic) alkaloids. quinine and quinidine. Since the introduction of cinchona to Europe in the 17th century. it played a role in treating emperors and peasants and was central to colonialism and wars. https://www.nacrack.com/quick-sale-Graffiti-Chicago-Refection-Skyline-Canvas-super-sale/