It's said that trade creates wealth. If wealth is determined by the total value of goods and services (including environmental goods and leisure time) people have, explain why allowing people to specialize and trade will make them wealthier.

Alaw in the united states that benefits an individual's health is the legal drinking age, also known as the national minimum drinking age act. individuals younger than 21 are prohibited from buying alcohol in order to prevent their exposure to this toxin.