<span>u.s. entry into WWI caused industrial psychologists to begin working with the military.After entering into world war-I there is a need for U.S to train their military and develop the army's strength and capability.Psychological research and treatment are important to national defense. Research can show how to improve military training, job assignment and equipment design. Treatment can help personnel cope with stress. Psychologists conduct research on human behavior and treat patients with mental problems. so,industrial psychologists to begin working with the military.</span>
<span>working at a company or large organization
You work for a boss, but your boss can also have a boss. In this, you'd be the workers/ peasants providing output for your boss to report. Your boss is a lord who must report to his boss, the monarch.
You can go in and elaborate this further, I just wrote the basics. </span>
Thanks for the points byee
