About 1/3 of Europe died over the course of two years. Some towns and villages became completely deserted due to plague victims. Also due to people fleeing the plague. When the plague finally burned out, there was much higher demand for labor than there was supply. This meant greater wages and writes for the peasants eventually do this work.
WWI tanks were used to lead infantry advances across no mans land (option a ). It was a welcome development, as it was hoped it would help ending the long and casualties provoking trenches type of war.
Provide jobs and faster production
Although it is somewhat presumptuous to generalize about the characteristics and attitudes of millions of people, some rather basic and important differences between the Japanese and U.S. workers appear to exist.
First, the Japanese concept of self is very different from the American view. In Japan, each person is believed to possess a unique spirit, soul, mind and heart, but the self concept is considered an impediment to growth. The Japanese establish identities that incorporate friends, relatives and coworkers in an open way to share feelings and improve on weaknesses. The workers relationship within the work group is very important psychologically.