1. http://inventors.about.com/od/cstartinventions/a/cotton_gin.htm
2. http://americanhistory.about.com/od/industrialrev/p/steamengine.htm
3. http://inventors.about.com/od/sstartinventions/a/sewing_machine.htm
4. http://veracitystew.com/2012/06/16/20-benefits-unions-gave-to-working-americans-chart/
5. http://jj5271994.wordpress.com/2010/03/11/was-global-warming-caused-by-the-industrial-revolution/environmentalpollution19thcentury/
6. http://www.mapuche-nation.org/english/environmental.htm
7. http://www.marketoracle.co.uk/Article11110.html
8. http://www.ehow.com/info_8159891_reasons-human-population-growth.html
2. http://americanhistory.about.com/od/industrialrev/p/steamengine.htm
3. http://inventors.about.com/od/sstartinventions/a/sewing_machine.htm
4. http://veracitystew.com/2012/06/16/20-benefits-unions-gave-to-working-americans-chart/
5. http://jj5271994.wordpress.com/2010/03/11/was-global-warming-caused-by-the-industrial-revolution/environmentalpollution19thcentury/
6. http://www.mapuche-nation.org/english/environmental.htm
7. http://www.marketoracle.co.uk/Article11110.html
8. http://www.ehow.com/info_8159891_reasons-human-population-growth.html