Why did prohibition go into effect?

Prohibition went into effect in the United States primarily due to the temperance movement, which sought to reduce alcohol consumption due to its perceived negative effects on society, including crime, family breakdown, and health issues. Advocates believed that banning alcohol would lead to a more moral and productive society. The 18th Amendment, ratified in 1919, established the prohibition of alcohol, reflecting a broader cultural shift and the influence of various religious and social groups. Ultimately, it aimed to improve public welfare but led to unintended consequences, including the rise of organized crime.