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.
A minor generally cannot form an enforceable contract. A contract entered into by a minor may be canceled by the minor or their guardian. After reaching the age of majority (18 in most states), a person still has a reasonable period of time to cancel a contract entered into as a minor.