original passage: Snake oil is a euphemism for deceptive marketing, health care fraud, or a scam. Similarly, "snake oil salesman" is a common expression used to describe someone who deceives people in order to get money from them. The terms derive their meaning from the petroleum-based mineral oil or "snake oil" that used to be sold as a cure-all elixir for many kinds of physiological problems. Many 19th-century United States and 18th-century European entrepreneurs advertised and sold mineral oil (often mixed with various active and inactive household herbs, spices, drugs, and compounds, but containing no snake-derived substances whatsoever) as "snake oil liniment", making frivolous claims about its efficacy as a panacea. William Rockefeller Sr. sold petroleum-based "rock oil" as a cancer cure without the reference to snakes. Patent medicines that claimed to be a panacea were extremely common from the 18th century until the 20th, particularly among vendors masking addictive drugs such as cocaine, amphetamine, alcohol and opium-based concoctions or elixirs, to be sold at medicine shows as medication or products promoting health.
original sentence: Many 19th-century United States and 18th-century European entrepreneurs advertised and sold mineral oil (often mixed with various active and inactive household herbs, spices, drugs, and compounds, but containing no snake-derived substances whatsoever) as "snake oil liniment", making frivolous claims about its efficacy as a panacea.
sentence2: In the 19th century, did the population of snakes likely decrease by a substantial amount in the areas where snake oil liniment was created?
sentence1: Snake oil is a euphemism for deceptive marketing, health care fraud, or a scam. Similarly, "snake oil salesman" is a common expression used to describe someone who deceives people in order to get money from them. The terms derive their meaning from the petroleum-based mineral oil or "snake oil" that used to be sold as a cure-all elixir for many kinds of physiological problems. Many 19th-century United States and 18th-century European entrepreneurs advertised and sold mineral oil (often mixed with various active and inactive household herbs, spices, drugs, and compounds, and containing a lot of snake-derived substances) as "snake oil liniment", making frivolous claims about its efficacy as a panacea. William Rockefeller Sr. sold petroleum-based "rock oil" as a cancer cure without the reference to snakes. Patent medicines that claimed to be a panacea were extremely common from the 18th century until the 20th, particularly among vendors masking addictive drugs such as cocaine, amphetamine, alcohol and opium-based concoctions or elixirs, to be sold at medicine shows as medication or products promoting health.