They all have ring-form composition and numerous divine interventions. The setting is about the same and talks about Greek mythology. The struggle is also the same in all of them: to rescue Helen, who is a Greek king from Troy. All of the stories are very similar.
Some of the similar ways that medieval university and modern universities are: There were different structures from differente majors, it was arts, science, and engineering which is similar to te universities now. As well money ranks the better place you study. Rich people in those times had the posibility of studying with better teachers like now people who are wealthy go to Ivy League universities.
In addition, they also gave general studies like grammar and vocabulary which is still part of the general studies f your first two years of college.
Domestic crisis is the answer
It would be communism and dictatorship. It is contrast why the allied powers fight for during the Second World War for a free and a democratic world but such dreams in the eastern Europe is lost because they are under the iron curtain of the Soviet Union after the war and become satellite states of USSR.