The ancient Athenians used a democracy, while the U.S uses a democratic republic. So in other words we got some of the democratic part from the Athenians. Hope this helps. :)
Answer:
single-blind.
Explanation:
Single-blind study is a human clinical trial method where only the subject examiner knows what is being used as a variable at any given time. It is commonly used as a criterion for validating quantitative experimental practices in science.
An example of this can be seen in the question above, where only the researcher knows which method is under investigation, while the research participants know nothing.
