Completar frases UNIT 6Versión en línea LEARNING VOCABULARY por celia maria alcántara martínez 1 beginning cathedrals bourgeoisie economic life food sculpture centuries walls artisan In the 12th and 13th , a period of growth led to the rebirth of cities . Cities became important centres of activity and trade . Palaces , and markets were built in the cities , which were protected by . Gothic arquitecture , an painting dominated . A new social class appeared called the . It was made up of traders , artisans and bankers . At the of the 14th century , scial tensions increased due to shortages , rising prices and a general decline in the quality of .