Iron Man: Pretty sure Stark has never died. Captain America: Cap was killed when he was shot after losing out the long-drawn registration battle against Stark and the government (the conclusion to the Civil War arc in Fallen Son: The Death of Captain America). But he wasn't actually dead.
Minors (individuals under age 18) and people who are mentally incompetent do not have the legal capacity to enter into contracts. All other people are considered to have the legal capacity to enter into contracts. In New Mexico and most states, the legal age for entering into contracts is 18 (see NMSA Â§28-6-1). A contract between a minor and an adult may be cancelled upon request of the minor, but is binding on the adult.
In some parts of the United States, a person must be 19 years old before he or she is a legal adult. In Scotland, a person can sign some types of contracts when he or she is 16 years old, but must be at least 18 to sign a contract to make a major purchase, such as buying a house or other property. To form a legally-binding contract, each party who is signing it must be able to understand what is being signed.