Andrew jackson contribution to the development of political parties was the

Jackson’s veto of the Indian Removal Act prompted the creation of the Democratic Party.

Explanation:

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.

answer; strength of association;