Magna Carta Explained: What It Said and Why It Mattered
Magna Carta, sealed by King John of England in 1215, limited royal power and set out legal protections that later shaped constitutional law. Here is what it said.
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Magna Carta, Latin for "Great Charter," is a peace agreement that King John of England sealed at Runnymede, a meadow beside the River Thames, on 15 June 1215. It was a settlement between the king and rebel barons who objected to his taxes and his use of royal power. It did not create modern democracy, but one of its clauses, which says a free man may not be imprisoned except by lawful judgement or the law of the land, became a foundation for later ideas of due process.
Why did the barons rebel?
John had lost most of the English lands in France, including Normandy in 1204. He then lost the Battle of Bouvines in 1214, an expensive failure for an alliance he had funded. To pay for more fighting he demanded heavy taxes and scutage, a payment made in place of military service. He also used feudal rights such as wardship and fines aggressively, and he quarrelled with the Church over the appointment of an archbishop of Canterbury.
By May 1215 the rebel barons held London, which left John little room to refuse negotiation. The charter was the result of talks at Runnymede over the following weeks.
What did Magna Carta say?
The charter had 63 clauses. Many dealt with feudal payments, the rights of heirs, and the liberties of towns and the Church. A few became famous.
- Clause 1 confirmed the freedom of the English Church from royal interference.
- Clause 39 says that no free man may be seized, imprisoned, outlawed or exiled except by the lawful judgement of his equals or by the law of the land.
- Clause 40 says that the king will sell no one right or justice, and deny or delay none.
- Clause 61 set up a council of 25 barons to ensure the king kept the charter, with power to seize his castles and property if he did not.
Most of the charter protected barons and churchmen, not ordinary peasants, who were largely outside its protections. The phrase "free man" meant a much smaller group than the population as a whole.
Why was it cancelled so quickly?
John had no intention of keeping the charter, and he asked Pope Innocent III to annul it. In August 1215 the Pope declared it void. The barons rejected that ruling and the country fell into the First Barons' War, which lasted until 1217. John died in October 1216 in the middle of it.
The charter was reissued in revised form to win support for the new king, Henry III, who was a child. Versions were issued in 1216 and again in 1217, when the war ended, and the 1217 version came with a separate Charter of the Forest. Edward I confirmed the charter in 1297. The table shows the main stages.
| Year | Issued by | What happened |
|---|---|---|
| 1215 | King John | Original charter, sealed at Runnymede |
| 1216 | Henry III, for a minor | Shortened and revised to win support |
| 1217 | Henry III | Reissued when the war ended, with the Charter of the Forest |
| 1297 | Edward I | Confirmed; this is the version later kept on the statute book |
How did it shape later law?
Magna Carta is best known for clauses 39 and 40, and for the idea that the king is under the law. In the 1600s the lawyer Sir Edward Coke used it in arguments against royal claims to power. Later documents, including the Petition of Right of 1628 and the Bill of Rights of 1689, drew on similar principles. Colonists in North America cited it too.
Its exact influence is debated. Historians disagree about how directly the 1215 text shaped later rights, such as the due process clauses of the United States Constitution, and how much of its reputation was built by lawyers and politicians in later centuries. Only four copies of the 1215 charter survive.
Why does it still matter?
The charter's real legacy is the principle it set out, that power must be exercised through law and that a ruler can be held to account. Copies of the charter were written out by hand, because the printing press did not reach England until 1476. The idea behind it, that power must answer to law, also runs through later debates about referendums and direct democracy. In legal terms, the charter was a negotiated agreement, closer to a contract between two parties than to a law passed by a legislature.
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common law history law medieval history
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