The Industrial Revolution caused people to move out of and into .

out of the farms and into the cities

Millions of people moved during the Industrial Revolution. Some simply moved from a village to a town in the hope of finding work whilst others moved from one country to another in search of a better way of life. Some had no choice, transportation was a punishment for some crimes.

Maybe Great Britain into Europe of the United States or maybe one of these:  Russia, and Japan.

Hope this helps!

fill in the blank

is slave

polisit can also mean a body of citizens. in modern historiography, polis is normally used to indicate the ancient greek city-states, like classical athens and its contemporaries, and thus is often translated as "city-state". the body of citizens came to be the most important meaning of the term polis in ancient greece.