Original sentence: The practice was common among Native Americans throughout North and South America, and was later introduced to the rest of the world, via trade, following European exploration of the Americas.Tobacco smoking is the act of burning the dried or cured leaves of the tobacco plant and inhaling the smoke for pleasure, for ritualistic or social purposes, self-medication, or simply to satisfy addiction
Edited sentence: Historically, before the health costs were known, the practice was common among Native Americans throughout North and South America.Sale of tobacco products is highly profitable.Since the life and health destroying properties of the smoke have become known, the primary motive for smoking is to satisfy addiction to nicotine (self-medication).The addiction was spread to the rest of the world by tobacco sellers, who have continued to market it worldwide even though they have ceased to dispute the resultant health costs and deaths.Thus the use of tobacco products continues to be ingeniously promoted by sellers as pleasurable or socially advantageous.Tobacco smoking is the act of burning the dried or cured leaves of the tobacco plant and inhaling the smoke