Alcohol laws are regulations that govern the sale, consumption, and distribution of alcoholic beverages. These laws vary widely by country, state, and even local jurisdictions. They often include age restrictions, licensing requirements for sellers, and rules about where alcohol can be consumed, such as in public places or private homes. In many places, the legal drinking age is set at 21 years to prevent underage drinking. Additionally, some regions have specific laws regarding the sale of alcohol on certain days or during certain hours, as well as regulations about advertising and promoting alcoholic products.