A. if B. sources C. created D. pure E. stem F. factors G. theories H. specific I. while J. reluctantly K. accurately L. creative M. objectives N. operated O. specialized A land free from destruction, plus wealth, natural resources, and labor supply—all these were important 1 in helping England to become the center for the Industrial Revolution. But they were not enough. Something else was needed to start the industrial process. That "something special" was men— 2 individuals who could invent machines, find new 3 of power, and establish business organizations to reshape society. The men who 4 the machines of the Industrial Revolution came from many back grounds and many occupations. Many of them were more inventors than scientists. A man who is a 5 scientist is primarily interested in doing his research 6. He is not necessarily working so that his findings can be used. An inventor or one interested in applied science is usually trying to make something that has a concrete use. He may try to solve a problem by using the 7 of science or by experimenting through trial and error. Regardless of his method, he is working to obtain a 8 result: the construction of a harvesting machine, the burning of a light bulb, or one of many other 9. Most of the people who developed the machines of the Industrial Revolution were inventors, not trained scientists. A few were both scientists and inventors. Even those who had little or no training in science might not have made their inventions 10 a groundwork had not been laid by scientists years before.