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This Day in American History

June 15

1 historic event on this date

Founding1215

Magna Carta Sealed

King John of England sealed the Magna Carta at Runnymede, establishing for the first time the principle that the king was subject to the law. Though an English document, its principles of due process, habeas corpus, and limited government profoundly influenced the American founders.

Why It Matters

The Magna Carta's principles of due process and limited government became cornerstones of American constitutional law, directly informing the Bill of Rights and the Fifth and Fourteenth Amendments.

Explore the Principles Behind the History

Every event in American history connects to the founding principles. Discover the ideas that shaped these moments.

View the 28 Founding Principles