How did the development of towns drive the evolution of medieval society? '?

The development of towns drive has engage to evolution of medieval society by the towns in which they have made people to be free from each class and that they were able to choose the occupation they want and to travel.

this forms a narrow, steep sided inlet (sometimes deeper than 1300 metres) connected to the sea. the terminal moraine pushed down the valley by the glacier is left underwater at the fjord’s entrance, causing the water at the neck of the fjord to be shallower than the main body of the fjord behind it.