How have number systems necessitated throughout history?

Examine this list of events that took place in china during the 20th century. which event or events could possibly have been a cause of the great leap forward? a. i only b. i, iii, and iv c. i and iii d. iii and iv

What was an important consequence of the neolithic revolution? ):

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