Magna Carta explained to kids. Great summary for ages 5 - 10. I'm sure their other sections are just as good.
Ferenan from Magna Carta: The Phantom of Avalanche
Magna Carta, the English charter in which King John guaranteed certain civil liberties to England’s powerful feudal barons, was reissued by every new king at least once between the first version in 1215 and the final edition in 1297 which remains on the books to this day.