8.1
Isthmus of Tehuantepec
Baja California
Mexican Plateau
Sierra Madre Oriental/Occidental
Mt. Orizaba
Yucatan Peninsula
sinkholes
Sonoran Desert
Chihuahuan Desert
Oil, mining and water status
8.2
Mesoamerica
1500 BC
Olmec
200 AD
Maya
250 AD
800 AD
Aztec
1200 AD
1519 AD
chinampas
Hernan Cortes
conquistadores
epidemic
smallpox
1520
1521
empire
mestizos
mulattoes
ejidos
haciendas
1810
Miguel Hidalgo y Costilla
1811
1821
1845
Porfirio Diaz
1910
1920
All Saints' Day
All Souls' Day
