The historic region of Mesoamerica comprises the modern day countries of northern Costa Rica, Nicaragua, Honduras, El Salvador, Guatemala, Belize, and central to southern Mexico. For thousands of years, this area was populated by groups such as the Olmec, Zapotec, Maya, Toltec, and Aztec peoples. Cultural traits that define the region include the domestication of maize, beans, avocado, and vanilla, and a common architectural style.