In most countries, someone is legally considered an adult when he or she is older than a certain age. This is called the Age of majority. Hitting the age of majority means that you are considered old enough to make your own decisions, and not having to be taken care of by your parents or other adults. In most countries, this age is 18 years. However, it varies from ages as low as 16 to as high as 21. There are many additional laws that determine from what age a person is allowed to do something; for example, vote, drink alcohol, and have sexual intercourse. 