The legal drinking age varies across countries, but in most of them, including the United States, it is set at 21 years old. Many nations have a drinking age of 18 or 19, such as the majority of Europe, including the UK, where the age is 18. Some countries have no official age limit or set lower limits for certain beverages. The differences in drinking ages reflect cultural attitudes toward alcohol, public health considerations, and societal norms regarding young adults' autonomy. Enforcement of these age limits also varies, with some countries placing a stronger emphasis on compliance than others.