The akkadians conquered the Sumerian city states forming the first . A. Kingdom b. Democracy c. Republic d. Empire

id say empire :3

Explanation:

hope this helps! ive been learning abt this is social studies :D

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.

answerinteraction of nature and nurture;