Why were the basic principles of American Government based upon earlier English

Among them was the idea that all people are created equal, whether European, Native American, or African American, and that these people have fundamental rights, such as liberty, free speech, freedom of religion, due process of law, and freedom of assembly. America's revolutionaries openly discussed these concepts.

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.