
The United States Constitution, the supreme law of the United States, came into effect in 1789, over 230 years ago. The Constitution was ratified in 1788 when New Hampshire became the ninth of 13 states to ratify it, replacing the Articles of Confederation, the nation's first constitution. The Constitution was drafted in 1787 and has been amended 27 times since 1789.
| Characteristics | Values |
|---|---|
| Date the Constitution became the official framework of the government of the United States of America | June 21, 1788 |
| First state to ratify the Constitution | Delaware, December 7, 1787 |
| Date the new government was set to begin | March 4, 1789 |
| Date the Constitution was ratified by all states | May 29, 1790 |
| Date the Bill of Rights was ratified to become part of the Constitution | End of 1791 |
| Date the Constitution was written | 1787 |
| Date the Constitution took effect | 1789 |
| Number of times the Constitution has been amended since 1789 | 27 |
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What You'll Learn

The US Constitution was ratified in 1789
The journey to ratification was a long and arduous process. The United States Constitution emerged from the Constitutional Convention in Philadelphia, which met between May and September 1787. The convention was convened to address the problems of the weak central government that existed under the Articles of Confederation. The convention was led by New York's Alexander Hamilton, who called for a reevaluation of the nation's governing document.
The new Constitution established a federal government with more specific powers, including those related to conducting relations with foreign governments. The federal government was divided into three branches: the legislative, consisting of the bicameral Congress; the executive, consisting of the President and subordinate officers; and the judicial, consisting of the Supreme Court and other federal courts.
The first state to ratify the Constitution was Delaware on December 7, 1787, followed by Pennsylvania, New Jersey, Georgia, and Connecticut. On June 21, 1788, New Hampshire became the ninth and final state needed to ratify the Constitution. Three months later, on September 17, 1788, the Congress of the Confederation certified the ratification of eleven states and passed resolutions setting dates for choosing the first senators and representatives, electing the first president, and officially starting the new government.
In 1789, Congress considered and proposed the first several Constitutional amendments, including the Congressional Apportionment Amendment, which would establish a formula for determining the appropriate size of the House of Representatives. This amendment is still pending ratification, as are three others, as Congress did not set a time limit for their ratification.
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The Articles of Confederation were replaced
The Articles of Confederation, officially the Articles of Confederation and Perpetual Union, was an agreement and early body of law in the Thirteen Colonies. It was the first constitution of the United States, serving as the nation's first frame of government during the American Revolution. The Articles were debated by the Second Continental Congress in Philadelphia between July 1776 and November 1777, and came into force on March 1, 1781, after being ratified by all 13 colonial states.
The Articles of Confederation created a loose confederation of sovereign states and a weak central government, leaving most of the power with the state governments. It formed a war-time confederation of states, with an extremely limited central government. The document made official some of the procedures used by Congress to conduct business, but it soon became apparent that a stronger federal government was needed.
The Articles were practically impossible to amend, as they required unanimous consent for any amendment, meaning all 13 states would need to agree on a change. Given the rivalries between the states, this made the Articles impossible to adapt after the war with Britain ended in 1783. The central government also couldn’t collect taxes to fund its operations, relying on voluntary efforts from the states, and lacked the power to regulate trade between the states and other countries. This left the United States in an economic mess by 1787, with huge Revolutionary War-era debts.
The final straw came with Shays' Rebellion, a tax protest by western Massachusetts farmers in 1786 and 1787, which showed the central government couldn’t put down an internal rebellion without relying on state militia. These events alarmed key figures such as George Washington, James Madison, and Alexander Hamilton, leading to calls for a constitutional convention to reevaluate the nation’s governing document. The Constitutional Convention of 1787 effectively ended the era of the Articles of Confederation, and the present United States Constitution replaced the Articles on March 4, 1789.
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The Bill of Rights was added later
The United States Constitution, which has been the supreme law of the United States since 1789, was ratified through a series of state conventions held in 1787 and 1788. The first state to ratify the Constitution was Delaware on December 7, 1787, followed by eight other states, with New Hampshire being the ninth state on June 21, 1788. However, Rhode Island did not approve the document until May 29, 1790, and the Bill of Rights was not ratified to become part of the Constitution until the end of the following year.
The Constitution was authored by the Continental Congress and the Constitutional Convention as a framework for the United States government. It superseded the Articles of Confederation, the nation's first constitution, on March 4, 1789. The Articles of Confederation, which was America's first constitution, gave the Confederation Congress the power to make rules and request funds from the states, but it lacked enforcement powers and could not regulate commerce or print money.
The journey to ratifying the Constitution was long and arduous. Some states voiced opposition to the Constitution because it did not provide protection for rights such as freedom of speech, religion, and the press. The Anti-Federalists, in particular, fought hard against the Constitution because it created a powerful central government and lacked a bill of rights. Despite this opposition, the Federalists, who believed in the necessity of a strong central government, were able to secure enough states to ratify the Constitution.
The Bill of Rights, which comprises the first ten amendments to the Constitution, was added later to address the concerns of those who opposed the original document. The terms of the Massachusetts Compromise, reached in February 1788, stipulated that amendments guaranteeing these rights—what became the Bill of Rights—would be immediately proposed. These amendments were eventually ratified by the required number of state legislatures, becoming the Bill of Rights.
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The US capital was established in 1790
The US Constitution, which serves as the supreme law of the country, came into effect in 1789. The document was written at the 1787 Philadelphia Convention and was ratified through a series of state conventions held in 1787 and 1788. The first state to ratify the Constitution was Delaware on December 7, 1787, followed by Pennsylvania, New Jersey, Georgia, and Connecticut.
The US Constitution was ratified in 1787, but the country did not have a permanent capital under the Articles of Confederation. The Constitution gave Congress the power to decide on a permanent capital. The 1st Congress met at Federal Hall in New York, and in 1790, they passed the Residence Act, which established the capital at a site along the Potomac River that would become Washington, D.C.
The Residence Act of 1790, officially titled "An Act for establishing the temporary and permanent seat of the Government of the United States," was signed into law by President George Washington on July 16, 1790. The Act provided for a national capital and a permanent seat of government to be established along the Potomac River, with President Washington empowered to appoint commissioners to oversee the project. The Act also designated Philadelphia as the nation's temporary capital while the new seat of government was being built.
The selection of a location for the capital was a contentious issue, with Secretary of the Treasury Alexander Hamilton pushing for Congress to pass a financial plan that included the federal government assuming states' debts incurred during the American Revolutionary War. This proposal was opposed by the Southern states, who argued that their taxpayers should not be burdened with bailing out the less fiscally responsible Northern states. However, a compromise was reached, known as the Compromise of 1790, in which the northern delegates agreed to the southerly Potomac River site, and in return, the federal government assumed the states' debts.
Thus, the US capital was officially established in 1790 along the Potomac River, with Philadelphia serving as the temporary capital until the new capital was ready in 1800.
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The US Constitution has been amended 27 times
The US Constitution, which superseded the Articles of Confederation on March 4, 1789, has been amended 27 times. The first ten amendments, known as the Bill of Rights, were ratified on December 15, 1791. The process of amending the Constitution is intentionally difficult, requiring a two-thirds majority in both the Senate and the House of Representatives. Since 1789, there have been approximately 11,848 proposals to amend the Constitution, with members of the House and Senate proposing around 200 amendments during each two-year term of Congress.
The amendments to the Constitution have addressed a range of issues, including voting rights, citizenship, and the abolition of slavery. The Nineteenth Amendment, ratified in 1920, prohibited the denial of the right to vote based on sex. The Reconstruction Amendments, adopted between 1865 and 1870 after the American Civil War, abolished slavery and granted citizenship and voting rights to former slaves.
The most recent amendments to the Constitution include granting women the right to vote, enacting and repealing Prohibition, abolishing poll taxes, and lowering the minimum voting age to 18. Other proposed amendments that have gained some support include outlawing flag burning, crime victims' rights, voluntary school prayer, making English the official language, and abolishing the Electoral College.
The process of amending the Constitution is ongoing, with four amendments currently pending ratification. The last time a proposal gained the necessary two-thirds support in both the House and the Senate for submission to the states was the District of Columbia Voting Rights Amendment in 1978. The difficulty of amending the Constitution has been a source of debate, with some calling for a new Constitutional Convention to address gridlock and the influence of interest groups.
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Frequently asked questions
As of 2025, it has been 236 years since the US Constitution became law. The US Constitution became the official framework of the government of the United States of America on June 21, 1788.
Ratification by 9 of the 13 states was required for the new government to be enacted. Delaware was the first state to ratify the Constitution on December 7, 1787. New Hampshire was the ninth state to ratify the Constitution on June 21, 1788.
The Constitution took effect on March 4, 1789. The first federal elections were held from December 15, 1788, to January 10, 1789.











































