 The upper classes tend to live in Hidalgo and Juárez in the northwest and southwest, while lower classes tend to live in the city center, Libertad in the northeast and southeast in Reforma.However, lower class development has developed on the city's periphery and upper and middle classes are migrating toward Zapopan, making the situation less neatly divided.Since 1996, the activity of multinational corporations has had a significant effect on the economic and social development of the city.