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Principles of American Constitutional Democracy

Learn the founding ideas of U.S. government: natural rights, popular sovereignty, rule of law, separation of powers, checks and balances, and federalism.

Practice this skill 20 min Principles of American constitutional democracy Leer en español
Key idea

What you'll learn

The United States was built on a set of big ideas, called principles. They answer two questions: Where does government's power come from? And how is that power limited?

In this lesson you will learn the eight principles the GED expects you to know. You will also learn the thinkers and documents they came from:

  • natural rights and the social contract (John Locke)
  • popular sovereignty ("We the People")
  • rule of law and limited government (Magna Carta, English Bill of Rights)
  • separation of powers (Montesquieu) and checks and balances (Madison)
  • federalism (national and state governments share power)

How it shows up on the GED: These ideas are among the most tested in Social Studies. You will read short pieces from the Declaration of Independence, the Constitution, the Federalist Papers, or thinkers like Locke and Montesquieu. Then you will:

  • name the idea a passage shows ("consent of the governed" → popular sovereignty),
  • match a story to an idea (a governor found guilty of a crime → rule of law),
  • explain how one document shaped another,
  • tell apart ideas that look alike. The big three are separation of powers, checks and balances, and federalism.
Words to know

Key terms

  • natural rights — rights you have just because you are human, before any government exists. Locke listed life, liberty, and property. The Declaration lists life, liberty, and the pursuit of happiness.
  • unalienable (inalienable) — cannot be taken away or given up.
  • state of nature — Locke's term for life before any government.
  • social contract — a deal: people agree to form a government and obey it. In return, the government protects their rights.
  • consent of the governed — government's power is fair only if the people agree to it.
  • popular sovereignty — the people are the final source of government's power ("We the People").
  • rule of law — everyone must obey the law, even leaders. A governor can be put on trial like anyone else.
  • limited government — government may do only what the people allowed in a constitution. It cannot break certain rights.
  • separation of powers — splitting government into three branches. The legislative branch makes laws. The executive branch carries them out. The judicial branch explains what they mean.
  • checks and balances — each branch can limit the others (the President's veto; Congress's override).
  • federalism — power is split between a national (federal) government and state governments.
  • right of revolution — the people's right to change or replace a government that destroys their rights.
  • Magna Carta — a 1215 English charter (a signed promise) that put the king under the law.
  • English Bill of Rights — a 1689 English law that limited the king or queen and protected some rights of the people.
  • Federalist Papers — 85 essays (1787–1788) by Alexander Hamilton, James Madison, and John Jay. They urged states to ratify — formally approve — the Constitution.

All Social Studies words in the glossary

Where power comes from: natural rights, the social contract, and popular sovereignty

In plain words: People have rights by birth. They set up a government to protect those rights. The power belongs to the people.

Think of neighbors who hire a security guard. They pay the guard to protect their homes. If the guard starts breaking into their homes, the deal is off. They can fire him. That is the core of Locke's idea.

Natural rights. John Locke (1632–1704) was an English thinker. He wrote Two Treatises of Government (1690). He imagined a "state of nature," a time before any government. Even then, he said, reason teaches that "no one ought to harm another in his life, health, liberty, or possessions." These are natural rights.

The social contract. Why form a government at all? In a state of nature, no one can safely protect those rights. So people agree to create a government to protect them. That agreement is the social contract. Locke wrote that "the great and chief end" of government "is the preservation of their property." By property he meant much more than land. He meant "lives, liberties and estates."

The right of revolution. What if the government attacks the very rights it should protect? Then, Locke said, the people "are thereupon absolved from any farther obedience." In plain words, they no longer have to obey. That is the right of revolution.

Cycle diagram of Locke's social contract. People have natural rights to life, liberty and property. They agree to form a government, giving their consent. The government protects their rights. Only if the government destroys those rights may the people alter or abolish it, the right of revolution. The Declaration of Independence (1776) echoes this: governments are instituted to secure these rights, deriving their just powers from the consent of the governed.Locke's Social ContractPeople have natural rights(life, liberty, property)They agree to form agovernment (consent)Government protectstheir rightsIf government destroysrights: right of revolutionTHE SOCIALCONTRACT(Locke, 1690)only when it failspeople may alteror abolish itDeclaration (1776): "to secure these rights, Governments are instituted among Men,deriving their just powers from the consent of the governed"

Locke in the Declaration. Thomas Jefferson put Locke's ideas at the heart of the Declaration of Independence (1776):

Locke (1690)Declaration of Independence (1776)
Natural rights to "life, health, liberty, or possessions""unalienable Rights … Life, Liberty and the pursuit of Happiness"
People unite under government to preserve their rights"to secure these rights, Governments are instituted among Men"
Government rests on the people's agreement"deriving their just powers from the consent of the governed"
People are freed from obeying a government that destroys their rights"it is the Right of the People to alter or to abolish it"

Popular sovereignty. This means all government power comes from the people. You can see it in two famous lines:

  • The Constitution begins: "We the People of the United States … do ordain and establish this Constitution."
  • Lincoln spoke of "government of the people, by the people, for the people."

No one is above the law: rule of law and limited government

In plain words: No one is above the law. And government can do only what the people allow.

Think of a referee in a game. The referee must follow the rulebook too. If the referee breaks the rules, the game is not fair. That is the rule of law.

Rule of law. Laws apply the same way to everyone. That includes the people who make and enforce them. The idea goes back to the Magna Carta (1215) in England. Nobles called barons forced King John to make a promise. Free men would not be jailed or lose their property except by lawful judgment or the law of the land. From then on, even the king was under the law.

Limited government. Government has only the powers the people give it. Some rights are off-limits. In 1689 the English Bill of Rights set new limits on the king or queen:

  • no taxes without Parliament's consent,
  • no army in peacetime without Parliament's consent,
  • no "cruel and unusual punishments." The U.S. later copied this phrase into the Eighth Amendment.

Limited government in the U.S. Constitution:

  • a written list of the powers given to Congress (Article I, Section 8),
  • clear bans on some actions. For example, Congress may not pass ex post facto laws. These are laws that punish something that was legal when it was done.
  • the Bill of Rights (1791), which protects freedoms such as speech, religion, and a fair trial,
  • the Tenth Amendment, which keeps all other powers for the states or the people ("to the States respectively, or to the people").

Examples:

  • A court orders a President to turn over evidence, and he obeys. → rule of law
  • Congress cannot pass a law that sets up an official national religion. → limited government (First Amendment)

Dividing power: separation of powers and checks and balances

In plain words: Split the power into three parts. Then let each part keep an eye on the others.

Think of a family business. One person orders supplies. Another pays the bills. A third checks the books. No one person can steal without someone else noticing. That is the idea here.

Separation of powers. Baron de Montesquieu was a French writer. In The Spirit of the Laws (1748), he warned: "When the legislative and executive powers are united in the same person, or in the same body of magistrates, there can be no liberty." The framers took his advice. They created three separate branches:

BranchMain jobConstitution
Legislative (Congress)Makes lawsArticle I
Executive (President)Carries out lawsArticle II
Judicial (Supreme Court and federal courts)Interprets lawsArticle III

Checks and balances. James Madison wanted more than separate branches. In The Federalist No. 51 (1788), he wrote that each branch needs "the necessary constitutional means and personal motives to resist encroachments of the others. … Ambition must be made to counteract ambition." In plain words, each branch must be able to push back when another grabs too much power. So the Constitution gives each branch tools to limit the others. These tools are checks and balances.

Diagram of checks and balances. Legislative branch (Congress, makes laws, Article I) at top; executive branch (President, carries out laws, Article II) at lower left; judicial branch (courts, interpret laws, Article III) at lower right. Executive checks legislative: can veto bills. Legislative checks executive: can override a veto with two-thirds of each house; Senate approves appointments and treaties; can impeach and remove the President. Judicial checks legislative: can declare laws unconstitutional. Legislative checks judicial: Senate confirms judges; can impeach judges; sets size of lower courts. Executive checks judicial: nominates federal judges. Judicial checks executive: can rule executive actions unconstitutional. Checks and Balances Among the Three Branches LEGISLATIVE BRANCH Congress: makes laws (Article I) EXECUTIVE BRANCH President: carries out laws (Article II) JUDICIAL BRANCH Courts: interpret laws (Article III) Executive checks Legislative: • can veto bills Legislative checks Executive: • can override a veto (2/3 of each house) • Senate approves appointments, treaties • can impeach and remove the President Judicial checks Legislative: • can declare laws unconstitutional Legislative checks Judicial: • Senate confirms judges • can impeach judges • sets size of lower courts Executive checks Judicial: nominates federal judges Judicial checks Executive: can rule executive actions unconstitutional

Keep these straight:

  • Separation of powers = power is divided into three branches.
  • Checks and balances = each branch can limit the others. Examples: veto, override, approving judges, impeachment, and judicial review.

Example: The Senate rejects a President's pick for the Supreme Court. Which principle? One branch is limiting another, so checks and balances.

Sharing power with the states: federalism

In plain words: Power is shared between the nation and the states.

Think of a big store chain. The head office sets prices and runs national ads. Each local store sets its own hours and hires its own staff. Some jobs, like paying taxes, both do. That is federalism.

Why the framers chose it. The first plan of government, the Articles of Confederation (1781–1789), made the national government too weak. It could not collect taxes or control trade. So the framers split power between two levels: the national (federal) government and the state governments.

Type of powerWho has itExamples
Delegated (enumerated)National governmentdeclaring war, coining money, making treaties, controlling trade between states
ReservedStatesrunning schools and elections, issuing driver's licenses, setting up local governments
ConcurrentBothtaxing, borrowing, setting up courts

The Tenth Amendment protects reserved powers: "The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."

What if a federal law and a state law truly clash? The Supremacy Clause (Article VI) settles it. The Constitution and federal laws are "the supreme Law of the Land."

Ladder of legal authority under the Supremacy Clause. From top to bottom: the U.S. Constitution, federal laws and treaties, state constitutions, state laws, local laws and rules. An arrow pointing up shows that the higher level wins in a conflict. Article VI calls the Constitution and federal laws the supreme Law of the Land.When Laws Clash: The Supremacy ClauseU.S. ConstitutionFederal laws and treatiesState constitutionsState lawsLocal laws and ruleswins ina conflictSupremacy Clause (Article VI): the Constitution and federal laws are "the supreme Law of the Land."

Federalism vs. separation of powers:

  • Federalism splits power up and down (nation ↔ states).
  • Separation of powers splits power sideways (Congress ↔ President ↔ courts).
Comparison of two ways the Constitution splits power. Separation of powers splits power sideways among three branches of one level of government: Congress makes laws, the President enforces laws, the courts interpret laws. Federalism splits power up and down between two levels: the national government (war, money, treaties) and state governments (schools, licenses, elections), which share power. Ask: branch versus branch, or nation versus state?Two Different Splits of PowerSeparation of powers: SIDEWAYSCongressmakes lawsPresidentenforces lawsCourtsinterpret lawsthree branches of ONE levelof governmentFederalism: UP AND DOWNNational (federal) governmentwar, money, treatiesshare powerState governmentsschools, licenses, electionstwo LEVELS of governmentAsk: branch vs. branch (separation / checks) or nation vs. state (federalism)?

Example: Each state sets its own age for a learner's driving permit. → federalism (reserved powers).

Worked example

Example 1 — Name the principle in a document

Source: Declaration of Independence: "…Governments are instituted among Men, deriving their just powers from the consent of the governed…"

Question: This phrase most directly expresses which principle? A. Federalism B. Popular sovereignty C. Judicial review D. Separation of powers

Think-aloud:

  1. Translate: governments get ("derive") their rightful ("just") power from the agreement ("consent") of the people they govern.
  2. Power comes from the people = popular sovereignty.
  3. Federalism is about nation vs. states; judicial review is about courts; separation of powers is about branches. None of those words appear.

Answer: B. Tip: translate old wording into plain English before matching it to a principle.

Worked example

Example 2 — Match a scenario to a principle

Source: "After a jury found the mayor guilty of accepting bribes, she was sentenced to prison under the same law that applies to every resident of the state."

Question: Which principle does this scenario illustrate? A. Rule of law B. Federalism C. Checks and balances D. Natural rights

Think-aloud:

  1. The key phrase is "the same law that applies to every resident." The mayor is a leader, but she is not above the law.
  2. That is the rule of law.
  3. Checks and balances (C) is tempting because a jury (part of the judicial system) acted, but checks and balances is about one branch limiting another branch's power, not about punishing an individual's crime.
Rule of law diagram. One box at the top reads: the same law, the state's bribery law. Arrows point down from it equally to the mayor and to four ordinary residents. No one is above the law: the leader answers to the same law as everyone.Rule of Law: One Law for EveryoneThe same law (bribery law of the state)MayorResidentResidentResidentResidentNo one is above the law: the leader answers to the same law as everyone.

Answer: A.

Worked example

Example 3 — Separation of powers or checks and balances?

Source: Article I, Section 7: "If after such Reconsideration two thirds of that House shall agree to pass the Bill, it shall be sent, together with the Objections, to the other House, by which it shall likewise be reconsidered, and if approved by two thirds of that House, it shall become a Law."

Question: This clause, which lets Congress override a presidential veto, is an example of A. federalism. B. checks and balances. C. popular sovereignty. D. limited government by the states.

Think-aloud:

  1. What is happening? The President has rejected (vetoed) a bill; Congress can pass it anyway with a two-thirds vote.
  2. Each branch is limiting the other: the veto checks Congress, and the override checks the President.
  3. That is checks and balances. It is not just separation of powers. Separation divides the jobs; this clause gives one branch a tool to block another.
Veto and override as checks and balances. Congress passes a bill and sends it to the President. The President vetoes it, a check on Congress. Congress can override with two-thirds of the House and two-thirds of the Senate, a check on the President, and the bill becomes law.Veto and Override: Each Branch Checks the OtherCongresspasses a billPresidentvetoes the billCongress overrides:2/3 of the House AND2/3 of the Senatebill sent to Presidentcheck on Congresscheck on PresidentLAW

Answer: B.

Worked example

Example 4 — Trace an influence

Source: Montesquieu (1748): "There is no liberty, if the judiciary power be not separated from the legislative and executive."

Question: Which feature of the U.S. Constitution most directly reflects this idea? A. The Bill of Rights protects freedom of religion. B. Article III places judicial power in courts separate from Congress and the President. C. The Tenth Amendment reserves powers to the states. D. The Preamble begins with "We the People."

Think-aloud:

  1. Montesquieu's point: the judiciary must be separate from the other two powers.
  2. Article III gives judicial power to "one supreme Court, and in such inferior Courts" (a branch of its own).
  3. A is about individual rights, C is federalism, and D is popular sovereignty. Each is a real principle, but none separates the judiciary.
Timeline of ideas behind the Constitution, with a break in the axis between 1215 and 1680. 1215 Magna Carta puts the king under the law. 1689 English Bill of Rights. 1690 Locke writes about natural rights. 1748 Montesquieu argues for separate powers. 1776 Declaration of Independence. 1787 Constitution, Articles I through III. 1791 Bill of Rights. A curved arrow from Montesquieu (1748) to the Constitution (1787) shows the influence: Article III makes the courts a separate branch.Tracing an Influence170017251750177518001215Magna Cartaking under the law1689English Billof Rights1690Lockenatural rights1748Montesquieuseparate powers1776Declaration ofIndependence1787ConstitutionArticles I–III1791Bill ofRightsinfluence: Article III makes courts a separate branch

Answer: B. Tip: match the specific idea in the quote, not just any principle you recognize.

Common mistake

Common traps

  • Mixing up separation of powers and checks and balances. Wrong: "A veto is separation of powers." Right: a veto is a check, because one branch limits another. Separation of powers just means the three jobs go to three branches.
  • Mixing up separation of powers and federalism. Wrong: "The Tenth Amendment separates powers." Right: the Tenth Amendment is about federalism (nation vs. states). Separation of powers is about branches.
  • Mixing up where power comes from and what government aims to do. Wrong: "'Establish Justice' shows popular sovereignty." Right: "We the People" shows the source of power. "Establish Justice" is a goal.
  • Reading Locke's "property" as only land or money. Right: Locke defines property as "lives, liberties and estates."
  • Stretching the right of revolution too far. Wrong: "The Declaration says people can overthrow any government whose laws they dislike." Right: it applies only when government "becomes destructive of these ends," meaning it destroys the rights it should protect.
  • Naming the wrong thinker.
    • Locke → natural rights, social contract.
    • Montesquieu → separation of powers.
    • Madison → checks and balances, a republic over pure democracy.
Test strategy

GED strategy for principles questions

  • Translate first. Rewrite an old sentence in your own words before looking at the choices ("deriving their just powers from the consent of the governed" → "power comes from the people agreeing").
  • Use signal phrases: "consent of the governed," "We the People" → popular sovereignty. "Unalienable rights" → natural rights. "No one is above the law" → rule of law. "Three branches" → separation of powers. "Veto," "override," "confirm," "impeach" → checks and balances. "States," "reserved," "national and state" → federalism.
  • Ask "branch vs. branch, or nation vs. state?" This one question separates checks and balances from federalism.
  • Watch for "too broad" choices that drop the author's conditions (like "whenever they disagree").
  • Answer from the text, using word help and the sentences around the quote.

Check yourself

Principles of American constitutional democracy
The Declaration of Independence

Adopted by the Second Continental Congress on July 4, 1776.

(1) "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.—That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed,—That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness."

(2) "The history of the present King of Great Britain is a history of repeated injuries and usurpations, all having in direct object the establishment of an absolute Tyranny over these States."

(3) "He has refused his Assent to Laws, the most wholesome and necessary for the public good." …

(4) "He has made Judges dependent on his Will alone, for the tenure of their offices, and the amount and payment of their salaries." …

(5) "For imposing Taxes on us without our Consent: For depriving us in many cases, of the benefits of Trial by Jury:" …

Word help: self-evident = obvious, needing no proof; unalienable = cannot be taken away or given up; instituted = set up; usurpations = wrongful seizures of power; tenure = length of time in a job.

In paragraph 1, the Declaration says people are "endowed by their Creator with certain unalienable Rights."

Which idea does this phrase express?

Answer choices
Hint

Check the word help: what does unalienable mean? And who gives these rights, according to the text?

Check yourself

Principles of American constitutional democracy
The Declaration of Independence

Adopted by the Second Continental Congress on July 4, 1776.

(1) "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.—That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed,—That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness."

(2) "The history of the present King of Great Britain is a history of repeated injuries and usurpations, all having in direct object the establishment of an absolute Tyranny over these States."

(3) "He has refused his Assent to Laws, the most wholesome and necessary for the public good." …

(4) "He has made Judges dependent on his Will alone, for the tenure of their offices, and the amount and payment of their salaries." …

(5) "For imposing Taxes on us without our Consent: For depriving us in many cases, of the benefits of Trial by Jury:" …

Word help: self-evident = obvious, needing no proof; unalienable = cannot be taken away or given up; instituted = set up; usurpations = wrongful seizures of power; tenure = length of time in a job.

According to paragraph 1, where does a government get its rightful ("just") power?

Answer choices
Hint

Find the word just in paragraph 1 and read the words right after it.

Summary

  • Natural rights exist before government. Under the social contract, people create government to protect them (Locke → Declaration).
  • Popular sovereignty: power comes from the people ("consent of the governed," "We the People").
  • Rule of law means no one is above the law. Limited government means government has only the powers it is given. Both go back to the Magna Carta (1215) and the English Bill of Rights (1689).
  • Separation of powers (Montesquieu) splits government into three branches.
  • Checks and balances (Madison) lets each branch limit the others.
  • Federalism splits power between the nation and the states. The Tenth Amendment keeps powers not given to the nation for the states or the people.
  • On the GED: put the source in plain words, match the key phrase, and tell look-alike ideas apart.
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