What common feature did medieval towns share across Europe?

The correct answer to this open question is the following.

Although there are no options provided, we can say the following.

The common feature that medieval towns shared across Europe was the formation of guilds, which were some kind of organized groups where people who worked in similar activities gather together to support each other. Other important characteristics of European medieval towns was that each had their own churches, monasteries, town halls, and schools. Many of these towns were located in strategic places such as rivers or roads because it gave them an advantage for trade. Trade activities represented an important part of the economy of European people in the Middle Ages.

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