Article II of the United States Constitution allows for three separate branches of government (legislative, executive, and judicial), along with a system of checks and balances should any branch get too powerful. Belinda Stutzman breaks down each branch and its constitutionally-entitled powers.
This is such an important topic for children and young adults to understand how their government works at federal, state and local levels. This video helps with giving a great overview of how the US Government works.