Magna Carta
What is Magna Carta? (great video from the British Library)
https://nebraskapublicmedia.pbslearningmedia.org/resource/magna-carta-video/a-more-or-less-perfect-union/ (video–shows the actual document and explains it)
https://www.britannica.com/topic/Magna-Carta
https://www.archives.gov/files/press/press-kits/magna-carta/magna-carta-translation.pdf (National Archives translation of the entire document)
https://www.history.com/topics/european-history/magna-carta
https://www.archives.gov/exhibits/featured-documents/magna-carta