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Principles of American Democracy

A short summary of what to know, then 6 free practice questions with answers.

What to know

The Constitution is the supreme law of the United States. It sets up the federal government, divides its power, and protects the rights of the people. It opens with the words “We the People,” which express the idea of self-government: the government gets its power from the people it serves.

The first ten amendments are called the Bill of Rights. Since 1787 the Constitution has been amended 27 times. Amendments are hard to pass on purpose, so the basic rules stay stable over time.

Several ideas run through the whole system. The rule of law means everyone, including leaders and officials, must follow the law. Federalism divides power between the national government and the states, and the Tenth Amendment keeps powers not given to the federal government for the states or the people. Checks and balances and the separation of powers keep any one branch from becoming too strong.

The United States has a market economy, often described as capitalism, in which most businesses and property are privately owned.

Key facts to remember

  • The Constitution is the supreme law of the land.
  • The first ten amendments are the Bill of Rights.
  • The Constitution has 27 amendments.
  • Rule of law: no one is above the law.
  • Federalism divides power between the federal government and the states.
  • Checks and balances stop one branch from holding too much power.
  • The economic system is capitalism, or a market economy.

Read the official study materials

This summary is our own and doesn’t replace the official guide. Read “Principles of American Government” in the USCIS study materials on uscis.gov, then test yourself below. Next topic: System of government.

Written by ChowChow Labs from the USCIS 2025 civics test materials. Last reviewed Oct 30, 2026. Spotted a mistake? Tell us.

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  1. Question 1 · Principles of Democracy

    What is the supreme law of the United States?

    1. A. Federalist Papers
    2. B. Constitution
    3. C. Declaration of Independence
    4. D. Articles of Confederation
    Show answer

    Answer: B. Constitution

    The Constitution is the supreme law of the United States.Source: USCIS 2025 civics test, “Principles of American Government”

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  2. Question 2 · Principles of Democracy

    Which amendment reserves powers not given to the federal government to the states or the people?

    1. A. Tenth Amendment
    2. B. First Amendment
    3. C. Twentieth Amendment
    4. D. Thirteenth Amendment
    Show answer

    Answer: A. Tenth Amendment

    The Tenth Amendment reserves undelegated powers.Source: USCIS 2025 civics test, “Principles of American Government”

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  3. Question 3 · Principles of Democracy

    What are the first ten amendments to the Constitution called?

    1. A. Articles of Confederation
    2. B. Bill of Rights
    3. C. Emancipation Proclamation
    4. D. Federalist Papers
    Show answer

    Answer: B. Bill of Rights

    The first ten amendments are known as the Bill of Rights.Source: USCIS 2025 civics test, “Principles of American Government”

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  4. Question 4 · Principles of Democracy

    What is the U.S. economic system, based mainly on private ownership, called?

    1. A. Command economy
    2. B. Capitalism
    3. C. Mercantilism
    4. D. Feudalism
    Show answer

    Answer: B. Capitalism

    Capitalism features private ownership and markets.Source: USCIS 2025 civics test, “Principles of American Government”

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  5. Question 5 · Principles of Democracy

    How many amendments does the Constitution have?

    1. A. 27
    2. B. 50
    3. C. 25
    4. D. 10
    Show answer

    Answer: A. 27

    The Constitution has 27 ratified amendments.Source: USCIS 2025 civics test, “Principles of American Government”

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  6. Question 6 · Principles of Democracy

    What is one purpose of checks and balances?

    1. A. Abolish courts
    2. B. Eliminate elections
    3. C. Prevent concentration of power
    4. D. Replace Constitution
    Show answer

    Answer: C. Prevent concentration of power

    Checks and balances limit the branches' power.Source: USCIS 2025 civics test, “Principles of American Government”

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