
The Constitution of the United States has been amended 27 times, with over 11,000 proposals made since 1789. The first 10 amendments, known as the Bill of Rights, were ratified in 1791. Amendments must be ratified by three-fourths of the states to become part of the Constitution. The process of amending the Constitution demonstrates the dynamic nature of governance and the ongoing pursuit of a more perfect union.
| Characteristics | Values |
|---|---|
| Number of Amendments proposed by the United States Congress | 33 |
| Number of Amendments ratified | 27 |
| Number of Amendments proposed since 1789 | 11,848 |
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What You'll Learn

There have been 27 amendments to the US Constitution
The US Constitution has been amended 27 times since it was first ratified in 1788. The first ten amendments, known as the Bill of Rights, were ratified together in 1791. These amendments established protections for individual liberties, including freedom of speech, freedom of religion, and the right to bear arms.
Over the years, amendments have been proposed by Congress and ratified by the states to address a range of issues. For example, the 18th Amendment, ratified in 1919, established the prohibition of alcohol. However, this amendment was later repealed by the 21st Amendment in 1933, which also serves as the only amendment to be ratified by state ratifying conventions. The 13th, 14th, and 15th amendments, known as the Reconstruction Amendments, were adopted following the Civil War to address issues related to slavery and equal protection under the law.
The process of amending the Constitution is designed to be deliberate and challenging. An amendment must be ratified by three-fourths of the states (38 states since 1959) to become part of the Constitution. Congress has also stipulated that amendments must be ratified within seven years of being proposed to the states. As of 2019, approximately 11,000 proposals to amend the Constitution have been introduced in Congress, with members typically proposing around 200 amendments during each two-year term. However, in recent decades, none of the proposed amendments have successfully become part of the Constitution.
The US Constitution's amendments reflect the nation's evolving understanding of rights and governance. They represent the efforts of lawmakers and citizens to interpret and adapt the nation's founding document to meet the changing needs and values of American society. The amendment process, though challenging, provides a mechanism for ensuring that the Constitution remains a living document capable of guiding the country through the complexities of modern times.
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The first 10 amendments are known as the Bill of Rights
The Constitution of the United States is a remarkable and foundational document in the history of the nation and has been amended numerous times. The process of amending the Constitution is a rigorous and meticulous one, ensuring that any changes made are thoroughly considered and widely supported.
Since the Constitution was enacted in 1789, there have been approximately 11,848 proposals to amend it, demonstrating the frequency with which ideas for change have arisen. However, only a small fraction of these proposals have successfully become part of the Constitution.
The first 10 amendments to the Constitution, known as the Bill of Rights, were ratified on December 15, 1791, and are of significant historical importance. These amendments were proposed by Congress on September 25, 1789, and their ratification marked a crucial step in the evolution of the United States' constitutional framework.
The Bill of Rights encompasses fundamental freedoms and protections for individuals, including freedom of religion, speech, and the press, as well as the right to peaceably assemble and petition the government. Additionally, it guarantees the right of the people to keep and bear arms, a well-regulated militia being deemed necessary for the security of a free state.
The Bill of Rights sets a precedent for safeguarding individual liberties and establishing a framework for the relationship between the government and its citizens. These amendments have had a profound impact on the interpretation and application of the Constitution, shaping the legal and political landscape of the United States.
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The 18th Amendment prohibited alcohol
The United States Constitution has been amended 27 times since its ratification in 1788, with the first 10 amendments, collectively known as the Bill of Rights, being ratified in 1791.
One of the most notable amendments is the 18th Amendment, which prohibited the production, transportation, and sale of intoxicating liquors in the United States. The 18th Amendment was the result of decades of efforts by the temperance movement, which argued that banning alcohol would eliminate poverty and improve societal issues such as immoral sexual behaviour and violence. The Anti-Saloon League, founded in 1893, played a significant role in the campaign for prohibition, with their advertisements and public demonstrations claiming that a ban on alcohol would create happier families and reduce workplace accidents.
The 18th Amendment was proposed by Congress on December 18, 1917, and ratified by the requisite number of states on January 16, 1919. Prohibition officially began on January 17, 1920, one year after ratification. While the 18th Amendment led to a decline in alcohol consumption, enforcing it proved challenging, especially in cities. Alcohol smuggling, or "bootlegging", and illicit bars, known as "speakeasies", became common across the country.
Public sentiment began to turn against Prohibition during the 1920s, particularly as the nation entered the Great Depression, with opponents arguing that the ban denied jobs to the unemployed and revenue to the government. Franklin D. Roosevelt, the Democratic presidential candidate in 1932, included a plan to repeal the 18th Amendment in his platform, and his victory that November sealed the fate of Prohibition. In February 1933, Congress proposed the 21st Amendment, which officially repealed the 18th Amendment and modified the Volstead Act to permit the sale of beer. The 21st Amendment was ratified on December 5, 1933, marking the end of Prohibition in the United States.
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The 21st Amendment repealed the 18th
The United States Constitution has 27 amendments, including the first 10 amendments known as the Bill of Rights. The 21st Amendment, which repealed the 18th Amendment, is unique in that it is the only amendment that serves to repeal a previous addition to the Constitution.
The 18th Amendment, which was ratified on January 16, 1919, established a nationwide ban on the manufacture, sale, and transportation of alcohol. This amendment was the result of a century of reform movements aimed at reducing alcohol consumption and preventing the negative consequences associated with it, such as alcoholism, drunkenness, disorder, and violence. While the immediate impact of Prohibition appeared positive, with a decline in alcohol-related crimes, the situation changed as the decade progressed.
Illegal alcohol production increased to meet the growing demand, and prices for illicit beverages decreased due to the growing number of underground alcohol producers. The illegal alcohol production centres also developed ties with organised crime organisations, such as the Chicago Outfit led by Al Capone. The influence of these criminal organisations allowed them to bribe businesses, political leaders, and police departments, effectively hindering the enforcement of the 18th Amendment.
As a result of the crime and general ineffectiveness associated with Prohibition, the 21st Amendment was proposed by the 72nd Congress on February 20, 1933, and ratified by the requisite number of states on December 5, 1933. This amendment expressly repealed the 18th Amendment, ending national prohibition and allowing for the legal manufacture, sale, and transportation of alcohol. The 21st Amendment is also notable for being the only amendment ratified not by state legislature, but by state ratifying conventions.
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The 13th, 14th, and 15th are the Reconstruction Amendments
The US Constitution has been amended 27 times, with the first 10 amendments being ratified on December 15, 1791, and known as the Bill of Rights. The 13th, 14th, and 15th Amendments, also known as the Reconstruction Amendments, were ratified between 1865 and 1870 following the US Civil War and the assassination of Abraham Lincoln.
The Reconstruction Amendments were essential to reuniting the United States during Reconstruction, and they provided the constitutional basis for enforcing and implementing Reconstruction legislation. Confederate states were required to ratify the 13th and 14th Amendments to be readmitted to the Union. The 13th Amendment abolished slavery in the entirety of the United States and granted Congress the right to enforce this through legislation. The House of Representatives and Senate officially adopted these amendments during the presidential administrations of Andrew Johnson and Ulysses S. Grant.
The 14th Amendment ensured that the Bill of Rights applied to all citizens of the United States, regardless of race, and it also ensured birthright citizenship, due process, and "equal protection of the laws" under federal and state governments. This amendment eliminated the three-fifths rule and punished any state that did not permit male citizens over the age of 21 to vote by reducing that state's proportional representation.
The 15th Amendment secured voting rights for Black men, making it illegal to refuse them the right to vote based on race or previous servitude. However, it did not outlaw literacy tests, poll taxes, and other methods that might prevent poor Black people from voting. Despite the passage of the Reconstruction Amendments, Southern state legislatures created segregation laws and voting restrictions to circumvent the demands of the amendments and target Black people.
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Frequently asked questions
There have been 27 amendments to the US Constitution.
More than 11,000 amendments have been proposed, but only 27 have been ratified.
The first 10 amendments, known as the Bill of Rights, were ratified in 1791.
To become part of the Constitution, an amendment must be ratified by three-fourths of the states (38 states since 1959).
Yes, the only amendment to be repealed thus far is the Twenty-first Amendment in 1933, which repealed the Eighteenth Amendment from 1919.
























