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.
Women in the United States
Child marriage, as defined by UNICEF, is observed in the United States. The UNICEF definition of child marriage includes couples who are formally married, or who live together as a sexually active couple in an informal union, with at least one member — usually the girl — being less than 18 years old. The latter practice is more common in the United States, and it is officially called cohabitation. Laws regarding child marriage vary in the different states of the United States. Generally, children 16 and over may marry with parental consent, with the age of 18 being the minimum in all but two states to marry without parental consent. Those under 16 generally require a court order in addition to parental consent.