Final answer:
The United States is not a pure democracy because it is a constitution-based federal republic where citizens elect representatives to make policy decisions.
Step-by-step explanation:
In a purely democratic society, all citizens would vote on all proposed legislation, but this is not how laws are passed in the United States. Instead, the United States is a constitution-based federal republic where citizens elect representatives to make policy decisions on their behalf. Each branch of the U.S. government – executive, judicial, and legislative – is held in check by the others.