The Magna Carta curbed the power of the king and established the rights of the English people. And the U.S. Constitution includes ideas and phrases taken almost directly from the charter, which rebellious barons forced their oppressive King John to sign in 1215.
However, the Magna Carta was ratified and reissued with each monarch who succeeded John. It was enacted as law in 1297 by the British parliament when it was reissued by King Edward I, nicknamed by his subjects, "The lawgiver." The 1297 document is considered the most definitive (and therefore valuable) version because that was the text that made it into the English statute books.
The medieval vellum manuscript was bought at auction by the founder of a private equity firm, David Rubenstein. We applaud him, because he plans to keep it where it has been on display at the National Archives and Records Administration in Washington D.C.
Now that's what I call equity.