Lincoln, an american adult, is asked: "do you consider yourself to have reached adulthood? " he responds that he feels that he is truly an adult. lincoln is probably years old.

Being legally adult in most states of America is when someone turns 18 but being mature is something well beyond adulthood. Lincoln’s statement shows signs of maturity and scientific studies about brain development tell us that most people reach their maturity near the age of 25 years.

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