Feudalism in the middle ages - a strict hierarchical system, based on land being exchanged for military service, and allegiance to the king under oath. http://www.discovermiddleages.co.uk/feudalism-in-the-middle-ages/
Vassal// a holder of land by feudal tenure on conditions of homage and allegiance.
Medieval map of Jerusalem. Love it! ;)
"Leaf from an Apocalypse Manuscript with Miniatures," main image and recto, German, c. 1340-1350. The tremendous size of the illustrations, and only brief snippets of text, suggest the artist intended the imagery was a primary means of communicating the meaning of the Revelations.