
The United States Constitution is the world's oldest written constitution that is still in use. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia. The US Constitution is considered a common ground for all Americans, providing a focal point for social coordination. It is a group effort of some of the country's greatest minds, with the bulk of the document credited to a single Founding Father. The Constitution was created to address the weaknesses of the Articles of Confederation, which was America's first constitution. The US Constitution established a stronger federal government with three branches—executive, legislative, and judicial—along with a system of checks and balances to ensure no single branch held too much power.
| Characteristics | Values |
|---|---|
| Date of signing | 17 September 1787 |
| Signatories | Delegates to the Constitutional Convention in Philadelphia |
| First governing document | Articles of Confederation |
| Type of government | Federal government with three branches: executive, legislative and judicial |
| System of checks and balances | Yes |
| Amendments | 17, in addition to the Bill of Rights |
| Inspiration | English law, European Enlightenment thinkers, American Revolution, Civil War, Progressive Era, Second Reconstruction of the 1960s |
| Purpose | To limit the power of government and secure the liberty of citizens |
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What You'll Learn
- The US Constitution is the oldest written constitution in force
- The US Constitution was influenced by European Enlightenment thinkers
- The US Constitution was also influenced by Iroquois Confederacy political concepts
- The US Constitution has endured and adapted through the centuries
- The US Constitution is considered a common ground for all Americans

The US Constitution is the oldest written constitution in force
The US Constitution, signed in 1787 and ratified in 1789, is the oldest written constitution in force. It is considered the supreme law of the land, with courts established by the Constitution regulating the government under it. The US Constitution was a group effort, with the bulk of the document credited to a single Founding Father. It was a plan for a stronger federal government with three branches—executive, legislative, and judicial—along with a system of checks and balances to ensure no single branch held too much power.
The US Constitution is considered a "common ground" for all Americans, providing a shared national narrative and a focal point for social coordination. It has endured and adapted through significant historical events such as the American Revolution, the Civil War, and the Progressive Era, with amendments layered chronologically, inviting readers to trace the temporal trend-line of American constitutionalism.
While the US Constitution is the oldest single document laying out an overall framework for governing a country, some scholars note that other countries have older written governing documents still in effect. For example, the United Kingdom's constitution is considered the oldest existing constitution if one includes the Magna Carta from 1215, with two of its articles still in force today. Similarly, San Marino's government is based on various legislative instruments, including written laws enacted in 1600.
Despite these older written governing documents, the US Constitution remains the oldest written national constitution in force among countries with a formal central constitution. Its endurance and adaptability have made it a revered document, central to the American identity and a testament to the country's rich history.
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The US Constitution was influenced by European Enlightenment thinkers
The United States Constitution is a written constitution, signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia. It is the country's supreme law and the written document has provided a common ground among Americans, allowing them to settle disputes and providing a shared national narrative.
The US Constitution was influenced by the ideas of European Enlightenment thinkers, including Montesquieu, John Locke, Jean-Jacques Rousseau, Voltaire, Thomas Paine, James Madison, Thomas Jefferson, John Adams, and Benjamin Franklin. These Enlightenment thinkers challenged traditional monarchical and aristocratic systems and their ideas about individual rights, balanced governance, and social contracts became particularly influential in the American colonies and the drafting of the US Constitution.
Montesquieu, for instance, suggested dividing government authority among three branches: executive, legislative, and judicial, to prevent tyranny by ensuring that no single branch could dominate the others. This idea became a cornerstone of American political philosophy, influencing the creation of a system of checks and balances. Locke, one of the most influential Enlightenment thinkers, based his philosophy on social contract theory, which also permeated Enlightenment political thought. Locke's ideas about unalienable rights and the separation of powers also influenced the structure of the US Constitution. Similarly, Rousseau advocated for direct democracy, where laws are made directly by the vote of all, and his ideas about the importance of the collective will and civic freedom influenced American political ideology.
The Founding Fathers' profound engagement with Enlightenment ideas shaped the ideological and structural framework of American governance. The Declaration of Independence, the Constitution, and the Bill of Rights embody the Enlightenment quest for reason, justice, and the intrinsic rights of individuals. Their commitment to these principles helped create a resilient republic grounded in the ideals of liberty and equality, a legacy that continues to define the trajectory of American democracy.
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The US Constitution was also influenced by Iroquois Confederacy political concepts
The United States of America has a written constitution, which is considered the supreme law of the land. The US Constitution is a revered document, which has endured and adapted through the changes the country has undergone since its creation.
The US Constitution was influenced by the political concepts of the Iroquois Confederacy. The Iroquois Confederacy was a multi-state government that ensured individual governance and freedoms. It represented five tribes: Mohawk, Onondaga, Cayuga, Oneida, and Seneca, and was federal in nature, operating under The Great Law of Peace. This law was a doctrine of 117 codicils where individual tribes handled their own affairs but came together to solve issues of common importance. The founders of the US Constitution were impressed by how the Iroquois legislated their affairs and subsequently drafted the US Constitution, echoing the Great Law of Peace.
The US Constitution was also influenced by the Iroquois Confederacy's core concepts of peace, equity, and justice. These concepts were promoted as foundational precepts for unifying the colonies. Benjamin Franklin, for example, drew on the wisdom and democratic principles of the Iroquois Confederacy and its constitution as he struggled to unite the 13 sparring colonies. He invited representatives of the Iroquois Nations to the Provincial Council of Pennsylvania in 1744 and the Albany Congress in 1754 to promote these concepts. Franklin also used a metaphor by Onondaga leader Canassatego, which became the inspiration for the bundle of 13 arrows held by an eagle in the Great Seal of the United States.
Additionally, the Iroquois Confederacy's concept of a focus on the "seventh generation" when enacting any new policy has influenced the US Constitution. This concept dictates that decisions must be designed for sustainability to yield benefits for at least seven generations into the future. This inherently considers and aspires to protect against climate change.
While the influence of the Iroquois Confederacy on the US Constitution is acknowledged by some, including the US Senate in a 1988 resolution, the extent of that influence is debated among historians.
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The US Constitution has endured and adapted through the centuries
The United States Constitution is the world's longest-surviving written constitution, which has endured for over two centuries as the framework of government. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia. The US Constitution was a group effort by some of the country's greatest minds, but the bulk of the document can be credited to a single Founding Father. The Founding Fathers intended the document to be flexible in order to fit the changing needs and circumstances of the country.
The US Constitution has been influenced by various sources, including English law, European Enlightenment thinkers, and the literature of republicanism in the United States. It has also been shaped by significant events in American history, such as the American Revolution, the Civil War, and the Progressive Era. The Constitution has been amended through formal and informal methods, with Congress and the Supreme Court playing crucial roles in these processes.
One example of an informal method of changing the Constitution is through legislation, such as the Civil Rights Act of 1964, which clarified and expanded the rights under the Constitution without formally amending it. Another example is the Supreme Court case "Roe v. Wade" (1973), where the Court interpreted the right to privacy in the Constitution to include a woman's right to choose an abortion, significantly changing the understanding of personal rights. Formal methods of amending the Constitution are outlined in Article V, while informal methods have been established through historical instances of legislation and landmark Supreme Court cases.
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The US Constitution is considered a common ground for all Americans
The US Constitution is a written document that was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia. It is considered a common ground for all Americans, providing a shared national narrative and a common vocabulary for deliberations. The Constitution was created to establish a stronger federal government with three branches: executive, legislative, and judicial, along with a system of checks and balances to prevent any single branch from having too much power.
The US Constitution has endured and adapted through significant moments in American history, including the American Revolution, the Civil War, and the Progressive Era. It has been amended over time, with the most recent amendment, Article XXVII, dealing with congressional pay raises, being proposed in 1789 and ratified in 1992. The Constitution guarantees basic individual protections, such as freedom of speech and religion, and is considered the supreme law of the land.
The written Constitution is valuable because it provides a sense of connection to earlier generations and a framework for understanding crucial episodes in American history. It also offers a common ground for Americans with diverse backgrounds, faiths, languages, and skin colours, uniting them under a shared national identity. The Constitution's brevity and relation to America's storyline make it accessible to ordinary citizens and a focal point for social coordination.
The US Constitution was influenced by various sources, including English law, the Magna Carta, and Enlightenment philosophers such as Montesquieu and John Locke. It was also shaped by the unique circumstances of the American people, with Thomas Jefferson noting that most European governments were autocratic monarchies incompatible with America's egalitarian character. The Constitution's principles and amendments reflect the democratic input of many minds over generations, making it a living document that continues to shape and be shaped by American society.
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Frequently asked questions
Yes, America has a written constitution. It was signed on September 17, 1787, by delegates to the Constitutional Convention in Philadelphia. The U.S. Constitution is considered the world's oldest written constitution still in use.
The U.S. Constitution was created to establish a stronger federal government with three branches—executive, legislative, and judicial—along with a system of checks and balances to ensure no single branch held too much power.
The authors of the Constitution were influenced by the country's experience under the Articles of Confederation, the first governing document of America. They also drew inspiration from European Enlightenment thinkers, English law, and the literature of republicanism in the United States.

























