<span>The new industrial class was filled with people who built factories, bought machinery, and figured out where the markets were.
In the new industrial era, most middle class will always made an effort to make innovation for new products/service that could be mass-produced for the market. This will led to them using various type of machineries and factories and will constantly to see the trend in public in order find inspiration for the products</span>
<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>
I belive the answer is Feudalism. It was used in Medievaltimes.
Answer:
good job your gonna be smart when you grow up for real
