
The US Constitution is the oldest and longest-standing written and codified national constitution in force in the world. It was written and signed in 1787 in Philadelphia, Pennsylvania, by 55 delegates to a Constitutional Convention and is considered a landmark document of the Western world. The US Constitution is not the only written constitution in the world, but it is the most difficult to amend, which has allowed significant democratic backsliding in the United States.
| Characteristics | Values |
|---|---|
| Date written | Summer of 1787 |
| Location written | Philadelphia, Pennsylvania |
| Authors | 55 delegates to a Constitutional Convention |
| Purpose | To amend the Articles of Confederation (1781-89), the country's first written constitution |
| Amendments | 27 |
| Ratification | Requires three-fourths of the states' approval (38 of 50) |
| Oldest written national constitution in use | Yes |
| Difficulty to amend | Most difficult in the world |
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What You'll Learn
- The US Constitution is the oldest active codified constitution
- The US Constitution is the most difficult to amend
- Most countries have codified constitutions
- The US Constitution is the shortest written constitution still in force
- The US Constitution was influenced by the writings of Polybius, Locke, Montesquieu, and others

The US Constitution is the oldest active codified constitution
The US Constitution is a landmark document of the Western world. It defines the principal organs of government and their jurisdictions, as well as the basic rights of citizens. The Constitution's first three articles embody the doctrine of the separation of powers, in which the federal government is divided into three branches: the legislative, consisting of the bicameral Congress (Article I); the executive, consisting of the president and subordinate officers (Article II); and the judicial, consisting of the Supreme Court and other federal courts (Article III).
The Constitution is the supreme law of the land and can only be changed by an extraordinary legislative process of national proposal, followed by state ratification. The powers of all departments are limited to the enumerated grants found in the Constitution. The Constitution also outlines the rights and responsibilities of state governments and their relationship to the federal government.
The US Constitution is also one of the most difficult constitutions in the world to amend. There are two steps in the amendment process: proposals to amend the Constitution must be properly adopted and ratified before they can change the Constitution. This process has helped preserve the Constitution as the oldest and longest-standing written and codified national constitution in force.
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The US Constitution is the most difficult to amend
The US Constitution is the oldest and longest-standing written and codified national constitution in force in the world. It was written in 1787 in Philadelphia, Pennsylvania, by 55 delegates to a Constitutional Convention. The Constitution is made up of seven articles, the first three of which embody the doctrine of the separation of powers, dividing the federal government into the legislative, executive, and judicial branches.
The US Constitution is also the most difficult to amend. Sanford Levinson wrote in 2006 that it has been the hardest constitution in the world to amend since the fall of Yugoslavia. There are two steps in the amendment process. Firstly, there are two procedures for adopting the language of a proposed amendment: either by Congress, with a two-thirds majority in both the Senate and the House of Representatives, or by a national convention (which occurs whenever two-thirds of state legislatures call for one). Secondly, there are two procedures for ratifying the proposed amendment, requiring the approval of three-quarters of the states (38 of 50): either through the consent of state legislatures or state ratifying conventions.
The difficulty in amending the US Constitution is further exacerbated by the variable degree of partisan division. Given that a successful amendment requires supermajority agreement in and among legislatures that are not ordinarily represented by a single political party, the higher the partisan division, the harder it is to amend.
The rigid constitution has been a cause for concern, with scholars arguing that the US is stuck with a constitution that is suboptimal, not suited to the present, and frozen in the past. The constitution's unamendability has allowed significant democratic backsliding in the United States, with many undemocratic institutions that most or all other democracies have reformed.
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Most countries have codified constitutions
The US Constitution is the supreme law of the land. It defines the principal organs of government and their jurisdictions, as well as the basic rights of citizens. It is divided into three branches: the legislative, consisting of the bicameral Congress (Article I); the executive, consisting of the president and subordinate officers (Article II); and the judicial, consisting of the Supreme Court and other federal courts (Article III).
The Constitution was written during the Philadelphia Convention, now known as the Constitutional Convention, which took place from May 25 to September 17, 1787. It was signed on September 17, 1787, in the Assembly Room of the Pennsylvania State House, now known as Independence Hall. The Constitution was the product of political compromise after long and often rancorous debates over issues such as states' rights, representation, and slavery.
The Constitution can be amended, but it is a difficult process. There are two steps in the amendment process. Proposals to amend the Constitution must be properly adopted and ratified before they can change the Constitution. First, there are two procedures for adopting the language of a proposed amendment: either by Congress, with a two-thirds majority in both the Senate and the House of Representatives, or by a national convention (which takes place whenever two-thirds of the state legislatures collectively call for one). Second, there are two procedures for ratifying the proposed amendment, which requires the approval of three-fourths of the states (38 out of 50): either through the consent of the state legislatures or through the consent of state ratifying conventions.
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The US Constitution is the shortest written constitution still in force
The US Constitution is the oldest and longest-standing written and codified national constitution still in force. It was written in 1787 in Philadelphia, Pennsylvania, by 55 delegates to a Constitutional Convention. The document, which is 7,762 words long, is the result of political compromise after long and often contentious debates over issues such as states' rights, representation, and slavery.
The US Constitution's main provisions include seven articles that define the basic framework of the federal government. The first three articles embody the doctrine of the separation of powers, in which the federal government is divided into three branches: the legislative, consisting of the bicameral Congress (Article I); the executive, consisting of the president and subordinate officers (Article II); and the judicial, consisting of the Supreme Court and other federal courts (Article III).
Articles IV, V, and VI embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relation to the federal government, and the shared process of constitutional amendment. Article VII establishes the procedure used by the 13 states to ratify the Constitution.
There are two steps in the amendment process. Proposals to amend the Constitution must be properly adopted and ratified before they can change the Constitution. Amendments can be proposed by Congress with a two-thirds majority in both the Senate and the House of Representatives, or by a national convention called by two-thirds of the state legislatures. Ratification requires the approval of three-fourths of the states, which can be done through the consent of state legislatures or state ratifying conventions.
The US Constitution is not the world's only written constitution, as other countries such as the United Kingdom, Canada, and New Zealand have constitutional provisions that are older and still in force today. However, it is the oldest written national constitution still in use.
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The US Constitution was influenced by the writings of Polybius, Locke, Montesquieu, and others
The US Constitution is the oldest and longest-standing written and codified national constitution in force in the world. It was written in 1787 in Philadelphia, Pennsylvania, by 55 delegates to a Constitutional Convention. The US Constitution was influenced by the writings of Polybius, Locke, Montesquieu, and others.
Polybius, a Greek historian, is known for his analysis of the Roman Republic and his concept of a ""mixed constitution." He argued that a stable regime should be a mixture of the three primary types of constitutions: kingship, aristocracy, and democracy. In Polybius's view, the different classes in society should be associated with different governmental institutions, with the patricians controlling the senate and the plebeians having their own assemblies. This institutionalization of the class struggle, he believed, would lead to greater regime stability.
John Locke, an English philosopher, is often credited with influencing the US Constitution's emphasis on natural rights and limited government. Locke's ideas on social contract theory, where individuals consent to form a government to protect their natural rights, likely influenced the Constitution's recognition of certain inalienable rights.
Montesquieu, a French philosopher, is known for his work "The Spirit of the Laws," where he explores the concept of separation of powers. He argued for a system of checks and balances to prevent the abuse of power by any single branch of government. This idea closely aligns with the US Constitution's division of powers among the legislative, executive, and judicial branches.
Other influences on the US Constitution include the country's experience under the Articles of Confederation, which highlighted the need for a stronger central government, and the debates during the Constitutional Convention, where issues such as states' rights, representation, and slavery were discussed. The final document was a compromise that balanced the interests of different states and laid the framework for the federal government.
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Frequently asked questions
No, the US Constitution is not the world's only written constitution. However, it is the oldest and longest-standing written and codified national constitution still in force. The US Constitution was written in 1787 and ratified by nine states in 1788.
The US Constitution was written to address the shortcomings of the Articles of Confederation, which was the country's first written constitution. The Articles of Confederation attempted to retain the states' independence and sovereignty while assigning only nationally important functions to the central government. However, it deprived the national government of essential powers, such as direct taxation and the ability to regulate interstate commerce. The US Constitution aimed to create a federal government with three branches: the legislative, executive, and judicial.
The US Constitution is significant because it put governance in the hands of the people, allowing them to select their form of government. It established a framework for the US government and defined the basic rights of citizens. The US Constitution has also inspired democratic ideals worldwide.

























