Its an opinion but im lazy so anybody ?

Why is it useful for historians to base certain studies on the analysis of historical periods

Diarys letters and memoirs are good examples of what

Legally, the decision to try a child (age 13 - 17) as an adult is mostly based upon which of these? a) the severity of the crime b) the influence of the family c) the number of past offenses d) the grades of the accused child e