How did the industrial revolution affect social life in society around the world?

The trend towards densely populated urban centers begun in 1800's continued into the 1900's. Man's development of urban centers was a major step away from what seemed to be nature's way of living: on farms and sparsely placed homesteads. Industrial production required hundreds of thousands of workers and, especially in the second industrial revolution, scientists. The urban centers that emerged during this period, such as Paris, London, and Berlin, were quickly changing the ratios of population from rural to urban Berlin's population, for example, went from 66% rural in 1871 to almost 66% urban before the first World War (see "The Second Industrial Revolution").

assessment is the missing word

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.