What roles did central governments have in early civilizations?

Approximately how many americans, from both the north and the south, were killed in battle during the civil war?

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

Who was created first? deadpool or spider gwen?