Final answer:
The US is a democratic presidential republic with a structure grounded in the Constitution, featuring a system of checks and balances and a federal division of power.
Step-by-step explanation:
The United States government is a democratic presidential republic that is characterized by a system of checks and balances among its three branches: the legislative, executive, and judicial branches. The Constitution of the United States is the foundational document that outlines the structure and powers of the government, establishing a federal system which divides powers between the national and state governments.
An understanding of governmental forms and functionality, including the rights detailed in the Bill of Rights, is crucial for an active and informed citizenship, which is fostered through higher education and participation in community and political activities.