Answer:
B. Industrialization and urbanization
Explanation:
The nineteenth century is the period of time when the industrial revolution had taken a hold of society completely. Never in the history of the human civilization had there been such cooperation that significantly caused the progress of our species.
Industrialization caused a large number of people to settle in cities. Urbanization caused a large mass of people to live together. The dynamics of human interaction had changed.
In order to understand how social interactions were affected people started studying human behavior in the nineteenth century.
The kwando river forms the boundary between Zambia and Zimbabwe.
The nomination by petition method is most often used at the local level.
Since valence shells in nonmetal atoms are almost full the atoms would then attract electrons and hold them tightly to fill their valence shells. hope this is helpful!
