"<span>b. The improvements in productivity in early agricultural societies enabled more complex societies to develop" would be the best option, since they had a surplus of food--meaning that people could focus on other jobs.</span>
Answer:
B.) join large groups traveling west.
Explanation:
or "Pioneers joined large groups in "jumping off" towns such as Independence, Missouri." Hope this helped!!
It was the beginning of the country's transition to peace and reunification following four years of Civil War.