Final answer:
The Constitution is the document that allows people to elect delegates to make laws and govern on their behalf, exemplified by the United States Constitution which balances power across branches of government.
Step-by-step explanation:
The document that established that people elect delegates and these delegates make laws and conduct government is known as a Constitution. This concept is an Enlightenment principle of representative democracy where political power comes from the people. As embodied by the United States Constitution, this approach ensures that a governmental structure is in place to represent the citizenry, dividising power across legislative, executive, and judicial branches with a system of checks and balances.