Adulthood is the stage of life that typically begins around the age of 18 and continues until old age. It is characterized by increased responsibilities, such as managing a career, forming relationships, and possibly raising children. During this period, individuals often seek independence and make important life decisions that can shape their future. In many cultures, adulthood is marked by specific milestones, such as graduating from school, starting a job, or getting married. These milestones can vary widely depending on social, cultural, and personal factors. Overall, adulthood is a time of growth, self-discovery, and establishing one's place in the world.