This instructional guide for international high school students covers the key principles of the US Constitution, including separation of powers, checks and balances, judicial review, federalism, limited government, and popular sovereignty. It provides a brief history of the Constitution and the founding of the US, then explains each of the three branches of government and how they work together. It also discusses important concepts like judicial review, federalism, and how the system aims to prevent abuse of power while protecting individual rights and majority rule. Students are given activities to demonstrate their understanding of the US governmental system.