Read the paragraph. The Industrial Revolution produced both positive and negative results. The greatest positive result was that it made many goods more plentiful. This availability, in turn, made the goods cheaper. Factories also created jobs for many people. Even though most of these jobs did not pay well, many people moved to the cities to work. Unfortunately, this led to overcrowding. Equally unfortunately, the same factories that produced jobs also produced pollution.

How would this paragraph be useful to someone gathering evidence for an argumentative essay on the Industrial Revolution?