Answer: Sino-Japanese war
Explanation:
Departmentalization means to break workers into logical groups. I remember this because it has the word department, which sounds like compartment, which means a separate section of something else.
The northwest culture area, for example shared common traits such as salmon fishing, woodworking, large villages or towns and a hierarchical social structure.
Though cultural features, language, clothing, and customs vary enormously from one tribe to another, there are certain elements which are encountered frequently and shared by many tribes.