I'll talk a bit about some of these in class, but I thought I'd post some data on a few different countries in Latin America, to give you a simpler context for comparisons/contrasts:
ARGENTINA
Demographic: White 97%, Other 3%
Population: 39 million (13 million in Buenos Aires)
Literacy: 96.2%
GDP/capita: $11,200
CHILE
Demographic: White/mestizo 95%, Indian 3%, Other 2%
Population: 15 million (5 million in Santiago)
Literacy: 96%
GDP/capita: $9,900
PERU
Demographic: Indian 45%, Mestizo 37%, White 15%
Population: 27 million (8 million in Lima)
Literacy: 91%
GDP/capita: $5,200
MEXICO
Demographic: Mestizo 60%, Indian 30%, White 9%
Population: 105 million (21 million in Mexico City)
Literacy: 92%
GDP/capita: $9,000
ECUADOR
Demographic: Mestizo 65%, Indian 25%, White 7%
Population: 13 million (2.5 million in Quito)
Literacy: 93%
GDP/capita: $3,300
BRAZIL
Demographic: White 55%, Mulatto 38%, Black 6%
Population: 184 million (2 million in Brazilia)
Literacy: 80%
GDP/capita: $7,600
All this data comes from Infoplease, if you'd like to look up other countries or just more detail.