Final answer:
A Republican government is a system where power comes from the people, with elected officials serving for limited terms, as upheld by the principles of the U.S. Constitution.
Step-by-step explanation:
A Republican government is defined as a form of government that is of the people and by the people. More specifically, it is a system where the government derives its powers directly or indirectly from the citizens and is administered by officials who are elected to hold public office for a set period of time or based on good behavior. In this context, neither monarchy, military rule, nor government by religious leaders aligns with the tenets of republicanism. The United States Constitution embodies the principles of a Republican government by ensuring direct election of the House of Representatives and indirect selection of Senators and the President, with measures in place such as term limits and processes for electing representatives that reflect the will of the people.