Final answer:
Industrial pollution in the middle of the twentieth century was a result of the lack of anticipation of the environmental impact of industrialization. Factories released unfiltered pollution into the air and water, causing pollution and contamination. The lack of foresight and regulations contributed to the issue of industrial pollution.
Step-by-step explanation:
Industrial pollution had become a problem in the middle of the twentieth century partly because few people had anticipated the environmental impact of industrialization and the negative consequences it would have on air and water quality. During this time, factories released unfiltered pollution into the air and water, leading to the spread of soot, filth, and toxic chemicals. Additionally, waste from mining and industrial activities contaminated water supplies. The lack of foresight and regulations contributed to the issue of industrial pollution.