| Natural Rights | Rights inherent to all people that no government can take away, including life, liberty, and the pursuit of happiness; drawn from Locke and stated in the Declaration of Independence. |
| Social Contract | The implicit agreement by which people surrender some freedoms to a governing authority in exchange for protection of their remaining rights and maintenance of social order. |
| Popular Sovereignty | The principle that all government authority derives from the consent of the governed, expressed through elections and representative institutions. |
| Federalist No. 10 | Madison's essay arguing that a large republic controls the dangers of factions by dispersing them and filtering their influence through elected representatives. |
| Brutus No. 1 | Anti-Federalist essay warning that a large, centralized republic would become too distant and powerful to preserve individual liberty and state sovereignty. |
| Articles of Confederation | The first U.S. governing framework (1781-1789), which created a weak central government with no power to tax, no executive, and no national courts; replaced by the Constitution. |
| Great (Connecticut) Compromise | The 1787 agreement creating a bicameral Congress with the House apportioned by population and the Senate giving each state two equal votes. |
| Separation of Powers | The constitutional division of federal authority among legislative, executive, and judicial branches, each with distinct functions and the ability to check the others. |
| Checks and Balances | The system by which each branch of government can limit the powers of the others, preventing any single branch from becoming too powerful. |
| Federalist No.51 | Madison's essay defending separation of powers and checks and balances as the structural safeguard against tyranny, arguing that ambition must counteract ambition. |
| Necessary and Proper Clause | Article I, Section 8 provision granting Congress power to make all laws needed to carry out its enumerated powers; the constitutional basis for implied powers. |
| Reserved Powers | Powers not delegated to the national government nor prohibited to the states, reserved to the states or the people by the Tenth Amendment. |
| McCulloch v. Maryland | 1819 Supreme Court case that affirmed Congress's implied power to create a national bank and established that states cannot tax federal institutions, broadly reading federal authority. |
| Supremacy Clause | Article VI provision establishing that the Constitution and federal laws are the supreme law of the land, overriding conflicting state laws. |
| Categorical Grants | Federal funds provided to states for specific, narrowly defined purposes with conditions attached, giving the national government significant control over how money is spent. |