
The US Constitution was adopted to address the shortcomings of the Articles of Confederation, which was America's first constitution. The Articles of Confederation created a weak central government, giving the Confederation Congress the power to make rules and request funds from the states, but it lacked enforcement powers, the ability to regulate commerce, or print money. The US Constitution superseded the Articles of Confederation on March 4, 1789, and established a federal system with checks and balances, creating a balance of power between the government's branches. The Constitution's first three articles embody the doctrine of the separation of powers, dividing the federal government into three branches: the legislative, executive, and judicial. The adoption of the US Constitution marked a pivotal moment in American history, shaping democracy, protecting minority rights, and providing a framework that has influenced governance worldwide.
| Characteristics | Values |
|---|---|
| Purpose | To form a more perfect union, establish justice, ensure domestic tranquility, provide for the common defence, promote the general welfare, and secure the blessings of liberty |
| Replaced | Articles of Confederation |
| Separation of Powers | Legislative, Executive, and Judicial |
| Ratification | Requires three-fourths of the states' approval |
| Amendments | 27 |
| Protection of Slave Trade | For 20 years |
| Supremacy | The supreme law of the United States of America |
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What You'll Learn

To replace the Articles of Confederation
The US Constitution superseded the Articles of Confederation, the first constitution of the United States, on March 4, 1789. The Articles of Confederation were adopted by the Continental Congress on November 15, 1777, and came into force on March 1, 1781.
The Articles of Confederation established a "league of friendship" for the 13 sovereign and independent states. Each state retained "every Power... which is not by this confederation expressly delegated to the United States". The Articles outlined a Congress with representation not based on population—each state had one vote, regardless of its size.
The Articles of Confederation limited the power of the central government. For example, the central government had little power to settle quarrels between states. It could not tax, regulate commerce, or set commercial policy. It also could not effectively support a war effort.
As the Confederation Congress attempted to govern the 13 states, it discovered that limitations on the central government, such as in assembling delegates, raising funds, and regulating commerce, restricted its ability to govern effectively. As a result, several prominent political thinkers began asking for changes to the Articles that would strengthen the powers of the central government.
The delegates to the Constitutional Convention in Philadelphia were initially only authorised to amend the Articles. However, they ended up writing a new constitution, which gave much more power to the central government. The Constitution's 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 Supreme Court and other federal courts (Article III).
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To create a powerful central government
The US Constitution was adopted to create a powerful central government, replacing the Articles of Confederation, which had created a weak central government that lacked enforcement powers, the ability to regulate commerce, and the power to print money. The Articles of Confederation had resulted in states' disputes over territory, war pensions, taxation, and trade, threatening to tear the young country apart.
Key political figures, including George Washington, James Madison, Alexander Hamilton, and John Jay, recognized the need for a more effective national government. They turned a series of regional commercial conferences into a national constitutional convention in Philadelphia in 1787, where delegates debated the Virginia and New Jersey Plans, which proposed differing approaches to representation and governance. The resulting discussions culminated in a landmark agreement that established a federal system with checks and balances, addressing the concerns of both populous and less populous states.
The Constitution's 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 Supreme Court and other federal courts (Article III). This system of checks and balances was designed to create a balance of power between the government's branches.
The delegates to the Federal Constitutional Convention of 1787 crafted compromises to reconcile their wildly different interests and views, resulting in one of the longest-lived and most emulated constitutions in the world. They bypassed the state legislatures, calling for special ratifying conventions in each state, and ratification by nine of the thirteen states. The Constitution was signed on September 17, 1787, by thirty-nine delegates, and implementation of the new national government began in late June 1788 after the required number of states ratified it.
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To establish a federal system
The adoption of the US Constitution was a pivotal moment in American history, emerging from widespread dissatisfaction with the Articles of Confederation by the mid-1780s. The Articles of Confederation, America's first constitution, gave the Confederation Congress the power to make rules and request funds from the states, but it had no enforcement powers, couldn't regulate commerce, and couldn't print money. The states' disputes over territory, war pensions, taxation, and trade threatened to tear the young country apart.
Key political figures, including George Washington, James Madison, Alexander Hamilton, and John Jay, recognized the need for a more effective national government. They turned a series of regional commercial conferences into a national constitutional convention in Philadelphia in 1787. The convention had its specific origins in a proposal offered by Madison and John Tyler in the Virginia assembly that the Continental Congress be given power to regulate commerce throughout the Confederation.
The delegates to the Federal Constitutional Convention of 1787 crafted a powerful central government. Representing wildly different interests and views, they created a federal system with checks and balances, addressing the concerns of both populous and less populous states. The Constitution delineates the frame of the federal government, with its first three articles embodying 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 Supreme Court and other federal courts (Article III).
The US Constitution remains significant for its role in shaping democracy, protecting minority rights, and providing a framework that has influenced governance worldwide.
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To protect slavery
The United States Constitution, which came into force in 1789, was the nation's second attempt at establishing a federal government, superseding the Articles of Confederation. The Constitution was written in broad, open-textured language, leaving room for interpretation and adaptation over time.
The Constitution's biggest flaw, according to many, was its protection of the institution of slavery. While the document does not contain the words "slave" or "slavery", it directly addressed American slavery in at least five provisions and indirectly protected the institution in other parts of the document.
One of the most significant ways in which the Constitution protected slavery was through the Three-Fifths Clause (Article I, Section 2, Clause 3). This provision counted three-fifths of each state's slave population towards that state's total population for the purpose of representation in Congress and the Electoral College. This gave Southern states with large slave populations more power in both the House of Representatives and the Electoral College.
Another way in which the Constitution protected slavery was through the Fugitive Slave Clause (Article IV, Section 2), which required that escaped slaves be returned to their owners, even if they had escaped to states where slavery had been abolished. Additionally, Article IV, Section 4, the domestic violence provision, guaranteed that the federal government would protect states from "domestic violence", including slave rebellions.
The framers of the Constitution believed that concessions on slavery were necessary to gain the support of southern delegates for a strong central government. They were convinced that if the Constitution restricted the slave trade, states like South Carolina and Georgia would refuse to join the Union. As a result, the Constitution included provisions that protected the slave trade, such as Article I, Section 9, which prohibited Congress from banning the importation of slaves until 1808, and Article V, which prevented this provision from being amended.
The protections for slavery in the Constitution laid the foundation for tragic events in the future, including the Civil War, which finally led to the elimination of slavery. However, racial inequalities stemming from slavery have persisted in the United States long after its abolition.
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To secure individual rights
The US Constitution was adopted to secure individual rights, among other reasons. The Constitution superseded the Articles of Confederation, which was America's first constitution, on March 4, 1789. The Articles of Confederation gave the Confederation Congress the power to make rules and request funds from the states, but it had no enforcement powers, couldn't regulate commerce, and couldn't print money. This led to disputes among the states over territory, war pensions, taxation, and trade, which threatened to tear the young country apart.
Key political figures, including George Washington, James Madison, Alexander Hamilton, and John Jay, recognized the need for a more effective national government. They turned a series of regional commercial conferences into a national constitutional convention in Philadelphia in 1787. The delegates to this convention debated the Virginia and New Jersey Plans, which proposed differing approaches to representation and governance. The resulting discussions culminated in a landmark agreement that established a federal system with checks and balances, addressing the concerns of both populous and less populous states.
The Constitution's 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 Supreme Court and other federal courts (Article III). This system of checks and balances was designed to create a balance of power between the government's branches.
The Constitution also includes a Bill of Rights, which protects individual rights such as freedom of speech, religion, and assembly, as well as the right to keep and bear arms. The Constitution has been amended several times to further secure individual rights, such as the Three-Fifths Compromise, which counted three-fifths of slaves as part of the population for representation purposes, and the Connecticut Compromise, which gave each state equal representation in the Senate.
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Frequently asked questions
The main purpose of adopting the US Constitution was to replace the Articles of Confederation, which was America's first constitution, and to create a more effective national government with a system of checks and balances.
The Articles of Confederation gave the Confederation Congress the power to make rules and request funds from the states, but it had no enforcement powers, couldn't regulate commerce, and couldn't print money.
The adoption of the US Constitution was a process that involved a series of conventions. A key moment was the meeting in Annapolis in 1786, which called for a broader constitutional convention in Philadelphia in 1787. The final draft of the Constitution was presented to the convention on September 17, 1787, and signed by 39 delegates.
The US Constitution delineates the framework of the federal government, with the first three articles embodying the doctrine of the separation of powers into three branches: the legislative, executive, and judicial. The Constitution also includes a Bill of Rights, which protects minority rights and provides a framework that has influenced governance worldwide.

























