The president of the United States cannot be a naturalized citizen - the actual phrase is that the president of the United States must be a "natural born citizen" - meaning that they must be born as citizens and not naturalized later (being born a citizen and naturalization are two ways of becoming a citizen)
Many things can be attributed to this people, for example:
- Those who invented chocolate were the Aztecs, the product was improved by European peoples. This was one of the great apprenticeships with this ancient civilization.
- The Aztecs were one of the first societies to develop a compulsory educational system for your population. They were great scholars of the stars and mathematics. It is no wonder that even for the European societies of the time, some of its technologies were quite advanced. An example is its calendar similar to ours, which had 365 days.
I believe the answer is: The Rorschach test
The Rorschach test is being done by showing the test subjects with symmetrical inkblots and tell the subject to describe what the subject see in the inkblot. The psychotherapist than would analyze and interpret the meaning of the subject's vision of the inkblot to determine the subject's undelying thought disorder.
Race or ethnicity; level of education; and sex of the head of the household (which honestly should not matter).