Metropolitan areas (3) Áreas metropolitanas (3) Wealth (2) Markets (2) Economics (2) Economic development (2) Cities and towns--Growth (2) Cities and towns (2) Estudios (2) Desarrollo urbano (2) Espacio (2) Riqueza (2) Mercados (2) Economía (2) Economic conditions (1) Distances, etc (1) Deterioration (1) Games (1) Zero (The number) (1) Twenty-first century (1) Struggle (1) Sports records (1) Social problems (1) Penal transportation (1) Population (1) Plazas (1) Play (1) Newspapers (1) Neighborhoods (1) Hypothesis (1)