Why do you think the chaldeans became traders?

answer:

the chaldeans became traders because they had easy access to other religions by way of mediterranean sea and persian gulf, which their empire bordered. hope this !

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.