Coming of age
In the United States, teenagers are allowed to drive at 16 in all states except New Jersey, which requires drivers to be 17 and older, and sometimes receive the responsibility of owning their own car. Teenagers may drive at age 15 in Idaho and Montana. At 16, teenagers are also old enough to donate blood and work in most establishments. At 18 one is legally considered an adult and can vote and join the military. The legal age for purchasing and consuming alcohol and recreational marijuana, the latter of which is only legal in the District of Columbia, Colorado, Oregon, Washington, California, Hawaii, Massachusetts, Nevada, and Alaska, is 21. The legal age for purchasing and consuming tobacco products is 18 in most states; 19 in Alabama, Alaska and Utah; and 21 in California, New Jersey, Oregon, Hawaii and Maine. Multiple localities have also raised the minimum purchase age independent of state laws.
Coming of age
A girl is considered an adult at the age of nine-to-twelve, while a boy is considered an adult at twelve-to-fifteen years old. The evidence for this is the narration of Ibn Umar that he said: "Allah's Apostle called me to present myself in front of him on the eve of the battle of Uhud, while I was fourteen years of age at that time and he did not allow me to take part in that battle but he called me in front of him on the eve of the battle of the Trench when I was fifteen years old, and he allowed me to join the battle." (Reported by Bukhari and Muslim). When Umar Ibn Abdul Aziz heard this Hadith he made this age the evidence to differentiate between a mature and an immature person.