Underestimating others is a failure of

What was the social class pyramid during the civil war?

Persons who have not yet attained the legal age of consent under the applicable laws in the jurisdiction in which the research was approved.persons who are under 18 years of age.persons who have not yet attained the legal age of consent under the applicable laws in the jurisdiction in which the research will be conducted.persons who are under 21 years of age.

Calculate the iq of a 20 year old who has the mental age of 25