Below Jan used pictures from a Khan Academy Youtube clip. They show the frescoes by Ambrogio Lorenzetti at the Palazzo Pubblico in Siena, Italy. At this time, [early 14th century] the subjects of paintings were almost exclusively religious. These, however are an allegory showing the principles and effects of good government in addition to the effects of bad government.
The talk to the Renaissance group was given by Jan Wadsworth.