Apparently, a central theme in the historians' debate on Central Europe from the seventies was the development of feudalism as something separating out such a region, in particular the second serfdom. Which brings me to thing about an earlier era. Catholics contend that what connects Europe historically above all is its common Christian past. But the spread of Christianity was just as much the spread of the then modern society model of feudalism.

_{*Lunatic*, n.
One whose delusions are out of fashion.}