The Legal Drinking Age refers to the minimum age at which an individual is allowed to purchase and consume alcoholic beverages. In many countries, this age is set at 18 or 21 years. The purpose of establishing a legal drinking age is to promote public health and safety, as younger individuals may be more susceptible to the negative effects of alcohol. In the United States, the National Minimum Drinking Age Act of 1984 established 21 as the legal drinking age nationwide. This law aimed to reduce alcohol-related accidents among young people. Different countries have varying laws, reflecting cultural attitudes towards alcohol consumption and youth.