[Pseudoscience-is-malarkey (OP)]

Curious somehow. I don't know.

[alancalverd]

The fact that it exists is the most significant. From 1215 until 1979, England and eventually the United Kingdom, was ruled by some form of parliament rather than a dictator.

Trial by jury, habeas corpus and the prohibition of arbitrary taxation were significant innovations that have persisted.

[Petrochemicals]

Curious somehow. I don't know.

The part where universal sufferage came out, or maybe the dont imprision and kill you without trial, but that may have been the far later Habeas Corpus .

[Bored chemist]

What is your favorite part of your country's Magna Carta?
The joke about the signature.