10. The Steam Engine, The Water Wheel, The Coal Burning Engine. 11. Machines became capable of doing most of the manual labor. 12. Polution levels rose and disease became easier to spread. There was also alot of smog in the air from the factories that popped up around that time. 13. a policy or attitude of letting things take their own course, without interfering. 14. Im not all that sure 15. (the question says to pick a change, not to discuss it in detail. only to pick one to discuss in detail) The Roaring Twenties.
