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[–] 4 points 6 months ago

Well, in the legal sense, I suppose it has to do with contracts and contract law. Some time ago in the US, it was determined that 18 was the legal age for adulthood because by then a person would be old enough to understand the terms of a contract and hold to those terms. Marriage is a contract. Military service is a contract. Getting a loan/mortgage is a contract.

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