Democracy is defined by the fact that government gets its power from the

The correct answer is: The people.

The main and most important characteristic of Democracy is that the people get to elect their representatives, and that the government posts only last a specific number of years.

If a leader is imposed or imposes himself upon the people, or if he stays for longer than the constitution says, his government is no longer a Democracy.

that is true because that is something they fulfill for their work.