The drinking age is the legal age at which a person is allowed to purchase and consume alcoholic beverages. In many countries, including the United States, the minimum legal drinking age is set at 21 years. This law aims to reduce alcohol-related accidents and health issues among young people. Different countries have varying laws regarding the drinking age. For example, in some European nations, the legal age is as low as 16 or 18. These differences reflect cultural attitudes towards alcohol and its consumption, as well as public health considerations.