This is a diagram based exercise, in which students create a diagram of the feudal system in medieval Europe. This pdf document contains a diagram to be filled out by students, perhaps from a reading, or from teacher direction. It is followed with an example of how I have filled it out for my students, and some web resources which can be used for teacher or student research into the subject. I always used this to specifically teach about the situation in England after the Norman Invasion of 1066, and so the rough example that follows the blank diagram ties most directly to that. This example was created by capturing from a whiteboard.