 Furthermore, in the United States, the age of 18 is the age at which people are able to legally vote and citizens are granted full rights upon turning 21 years of age.According to Arnett, the term "young adulthood" suggests that adulthood has already been reached, but most people in the emerging adulthood stage no longer consider themselves adolescents, but do not see themselves entirely as adults either.In the past, milestones such as finishing secondary school, finding a job, and marrying clearly marked the entrance to adulthood, but in modern, post-industrialized nations, as positions requiring a college degree have become more common and the average age of marriage has become older the length of time between leaving adolescence and reaching these milestones has been extended, delaying the age at which many young people fully enter adulthood.