Cosimo de' Medici was a patriot and a patron. He was a "patriot" because he acted like a father to his city. He became part of the town council. They were a group of men called the "signorina" (the seniors or elders). Cosimo made laws that adjusted the taxes. Some of the rich people did not like this at all and left the city, making Cosimo more powerful. He took good care of industry, of trade and of farming, because Florence needed all these things. He particularly needed the loyalty of all the farms and villages, because a city in a valley is easy for an army to attack. Cosimo built public buildings and when he had a palace built for himself, he had long stone seats built along the walls for the poor and the elderly to sit on.