Suburbanization of more developed countries is due to

desire to change lifestyle

Explanation:

Compared to the cities, the suburb tend to be less hectic, lower crime rate and have lower rate of pollution. As people grow older, people tend to be less tolerable of these negative characteristics of the cities.

Because of this, they tend to developed the desire to change their lifestyle and move to the suburban area in order to get it.

answer; i believe two are ; /// world bank and international monetary fund; good luck

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.