Stalin suffered a sense of inferiority because he suffered severe scarring from a serious childhood disease. The scarring on his face was due to the disease of small pox that happened to him at the age of 7. He was also born with two adjoined toes in his left foot. His left arm also was a bit shorter than his right arm because of an accident that he suffered at the age of 12.
What the passage supposed to be, we can’t see it
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
You've provided three achievements:
1 Equality of male and female
2 House of Wisdom
3 Irrigation techniques
These are 3 of the most important achievements of the Islamic Kingdoms and you've explained them briefly. If the instructions were to explain each achievements concisely, your work would be enough.
The south approved slavery because slaves were useful to them on their cotton farms. However, after the invention of cotton gin many saw that they didn’t need to slaves to work for them on the cotton fields anymore as it was easier to own a machine which would do the work instead. They saw the slaves as pointless and impractical after the invention.
