Reasons why people move to favelas?

People moved to favelas mainly because of the money charges they could avoid. They could avoid heavy taxes as they had not much land to themselves. It was a also a means of safety, as most people did not go to the favelas as they thought it would be disgraceful to lower themselves to the standards of the poor peasants. So there were many reasons why people moved to favelas. check wikipedia for more info, it's really good!