It was until late 1700s that some people started being concerned about the amount of alcohol that people were drinking. By 1800, abstinence pledges were introduced in churches and by 1833, 6,000 societies had been formed to support alcohol prohibition.
After many years of anti-liquor movements organized by the "Dries", people in favor of prohibition, the Congress voted for prohibition at the end of 1917. Even then the "Wets", people against prohibition, were confident that the 18th Amendment would not be ratified by the 36 necessary states in the time limit of 7 years, but to people's surprise, it took only 13 months for the amendment to be ratified.