during the medival period which group played an important role in staging plays in various parts of town

Trade guilds played an important role in staging plays in various parts of town, in medieval period.

Explanation:

Guild is a group of artists or merchants who practice their craft in an area. Changes in the economic and political arena in the "Middle Ages" led to the formation of guilds. Trade guilds had grown into full-fledged organizations.

Trade guilds used to usually perform religious based plays, mainly a story from a bible that used to refer to their profession. Many of the people acting in these plays were from the local population.

Guilds provided most of the props and other production values. These plays were very important for the guilds.