At 21 years old, individuals typically enter the stage of adulthood, which is marked by increased independence and responsibility. In many countries, this age is significant as it often grants legal rights such as voting, drinking alcohol, and signing contracts. During this period, many people pursue higher education or start their careers, shaping their personal and professional identities. Social relationships may evolve, with a focus on building long-term connections and establishing a sense of community. This age often represents a transition into a more self-sufficient lifestyle.