The neolithic agricultural revolution contributed to an increase in trade between groups of people

Yes

Explanation:

Neolithic Revolution or Neolithic Demographic Transition, sometimes called the Agricultural Revolution, was the large-scale transition of many human cultures from hunter-gatherer and nomadic to a stationary agricultural and sedentary lifestyle, making a growing population possible.

With more dense gathering of populations, we started seeing more organized roles, hierarchies and specializations, which also contributed to trade.

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.