What changes in the world did Kennedy think were necessary to make the world a more peaceful and prosperous place? What changes in the world do you think are necessary to make the world a more peaceful and prosperous place

yes you could be a life guard if that the question.

a, overstatement is the answer

"urban sprawl, the spreading of large developments of housing and shopping areas around a city’s center, has many negative cultural and environmental effects. " (from your link)

so, your answer is: it has a negative effect on the environment, otherwise known as c~hope this mate.