How was civilization in the middle ages

The 13th century was the apex of medieval civilization. The classic formulations of Gothic architecture and sculpture were known. Many different kinds of social units proliferated, including guilds, associations, civic councils, and monastic chapters. People in the early Middle Ages were every bit as intelligent as their Roman-era forebears and also just as smart as we are.

Hope this was what you were looking for. Your question wasn't very specific.

the correct answer is history and tradition.

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.