
The United States Constitution is a document that outlines the structure and function of the US federal government. It is composed of three parts: the Preamble, seven articles, and 27 amendments. The Preamble introduces the purpose of the document, which is to establish a more perfect union and secure the rights and liberties of its citizens. The first three articles embody the separation of powers, dividing the government into the legislative, executive, and judicial branches. The remaining articles describe the relationship between the federal government and the states, with Articles IV, V, and VI embodying concepts of federalism. The US Constitution was influenced by the political concepts of the Iroquois Confederacy and European Enlightenment thinkers, and it has been amended 27 times since its ratification in 1788 to adapt to the changing needs of the nation.
| Characteristics | Values |
|---|---|
| Number of parts | 3 |
| First part | Preamble |
| Second part | 7 Articles |
| Third part | 27 Amendments, the first 10 of which are called the Bill of Rights |
| Purpose of the document | To unite a group of states with different interests, laws, and cultures |
| Purpose of the Federal Government | To establish justice, ensure domestic tranquility, provide for the common defence, promote the general welfare, and secure the blessings of liberty |
| Structure of the Government | Legislative (Congress), Executive (office of the President), and Judicial (Federal court system) |
| System of Government | Federal democratic republic |
| Justiciability | Standing, real and substantial interests, adversity, and avoidance of political questions |
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What You'll Learn

The US Constitution's structure
The US Constitution is composed of three parts, the first of which is the Preamble. This introductory statement describes the purpose of the document and the Federal Government. The Preamble begins with the famous words, "We the People", and outlines the intention to "form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity".
The second part of the Constitution is made up of seven articles that establish how the Government is structured and how it operates. The first three articles embody the doctrine of the separation of powers, dividing the federal government 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 Federal Court system (Article III).
Articles IV, V, and VI describe the relationship between the states and the Federal Government, establish the Constitution as the supreme law of the land, and define the amendment and ratification processes. Article VII establishes the procedure used by the 13 states to ratify the Constitution.
The third part of the Constitution is the Amendments, which list the changes made to the document over time. There have been 27 amendments to the Constitution, with the first 10 collectively known as the Bill of Rights.
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The Preamble
The full text of the Preamble is as follows: "We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America."
This Preamble establishes the idea of a unified nation, with the people as the sovereign power. It highlights the goals of creating a fair and just society, ensuring peace within the nation, providing for the collective defence, promoting the welfare of the people, and protecting the freedoms and liberties of the citizens.
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The seven Articles
The US Constitution is composed of a preamble, seven articles, and 27 amendments. The first 10 amendments are known as the Bill of Rights. The seven articles make up the structural constitution, signed on September 17, 1787, and ratified on June 21, 1788.
The first three articles embody the doctrine of the separation of powers, dividing the federal government into three branches: the legislative, the executive, and the judicial. Article I assigns responsibility for making laws to the legislative branch (Congress). Congress is bicameral, consisting of the House of Representatives and the Senate. Article II covers the executive, consisting of the President and subordinate officers. Article III covers the judicial, consisting of the Supreme Court and other federal courts.
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 IV establishes the relationship between the states and the federal government, with Article V explaining the amendment process. Article VI states that federal law is supreme to state and local laws, and Article VII describes the ratification process for the Constitution, establishing the procedure for the 13 states to ratify it.
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Amendments
The US Constitution is composed of a preamble, seven articles, and 27 amendments. Amendments refer to the changes to the Constitution. The first 10 amendments are known as the Bill of Rights and were ratified on December 15, 1791.
Article V of the Constitution explains the amendment process, which is more difficult than the process for making laws. A proposed amendment must be approved by two-thirds of the Senate and two-thirds of the House of Representatives before it can be sent to the state legislatures for a vote. Alternatively, two-thirds of the state legislatures can submit an application to Congress, which will then call a national convention at which states propose amendments. Finally, three-fourths of the state legislatures or state conventions must vote in favor of an amendment for it to be ratified.
The amendment process embodies the concept of federalism, which involves the rights and responsibilities of state governments and their relationship with the federal government. It also establishes the Constitution as the supreme law of the land, with federal law taking precedence over state and local laws.
The process of amending the US Constitution is a complex and deliberate procedure, reflecting the importance of maintaining a stable and effective system of government while also allowing for necessary changes to be made over time.
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The Bill of Rights
The US Constitution is composed of a preamble, seven articles, and 27 amendments. The first 10 amendments, known as the Bill of Rights, were ratified on December 15, 1791.
The amendments in the Bill of Rights have been instrumental in shaping the interpretation and application of the Constitution, providing a framework for protecting the rights and liberties of individuals and ensuring a system of checks and balances on governmental power.
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Frequently asked questions
The US Constitution is composed of a preamble and seven articles that describe the way the government is structured and how it operates. The first three articles establish the three branches of government: the legislative, consisting of the bicameral Congress (Article I); the executive, consisting of the President (Article II); and the judicial, consisting of the Federal court system (Article III). Articles four through seven describe the relationship of the states to the Federal Government, establish the Constitution as the supreme law of the land, and define the amendment and ratification processes.
There have been 27 amendments to the US Constitution, beginning with the Bill of Rights, the first 10 amendments, ratified on December 15, 1791.
Article V explains the amendment process, which is different and more difficult than the process for making laws. When two-thirds of the Senate and two-thirds of the House of Representatives vote to change the Constitution, an amendment goes to the state legislatures for a vote. Alternatively, two-thirds of the state legislatures can submit an application to Congress, and Congress calls a national convention at which states propose amendments. Three-fourths of the state legislatures or state conventions must vote in favor of an amendment to ratify it.
The US Constitution united its citizens as members of a whole, vesting the power of the union in the people. The Constitution's first three articles embody the doctrine of the separation of powers, preventing any one branch from becoming dominant. The concepts of federalism are also embodied in the Constitution, describing the rights and responsibilities of state governments and their relationship to the federal government. The Constitution also guarantees certain liberties and rights, such as due process, equal protection, freedom of speech, and the right to vote.

























