Migration is usually going from rural to urban areas, pushing people out of the countryside towards cities where they can find an economic universe which is more dynamic and that can offer better job opportunities. This tendency has shown itself worldwide throughout history.

People fled the countryside because of the association of the area with the absence of prospects of receiving an education, unemployment, harsher financial conditions and generally lower quality of life. Cities offered a social and economic environment where it was possible to build a wealthier lifestyle.