Pangea
The supercontinent that began forming 225 million years ago.
Canadian Shield
A zone of ancient rock that was the first part of North America to emerge from sea level.
Glaciers
Two-mile thick ice sheets that melted about 10,000 years ago, forming North America and bodies of water like the Great Lakes.
Bering Land Bridge
The land bridge that connected Asia and North America, allowing the first humans to reach the Americas.
Nomadic Asian Hunters
The ancestors of Native Americans who migrated to the Americas.
European Arrival
In 1492, Europeans arrived in the Americas, where about 54 million people lived, leading to diverse languages and cultures.
Incas, Mayans, Aztecs
Major civilizations in Peru, Central America, and Mexico, respectively.
Maize
Also known as Indian corn, it was the primary food source in Mexico.
Three Sisters Farming
An agricultural method involving maize, beans, and squash that supported high populations.
Pueblo Peoples
Indigenous people in the Rio Grande who developed irrigation systems for agriculture.
Cahokia
A Mississippian settlement near present-day East St. Louis, home to 25,000 people.
Iroquois
A group in the northeastern woodlands known for their political and military alliances.
Encomienda System
A system that allowed colonists to enslave Native Americans for labor in exchange for Christian conversion.
Bartolomé de Las Casas
A Spanish missionary who opposed the encomienda system.
Hernán Cortés
The Spanish conquistador who led the expedition that caused the fall of the Aztec Empire.
Noche Triste
The "sad night" when the Spanish laid siege to Tenochtitlán, resulting in significant loss of life.
Francisco Pizarro
The conqueror who defeated the Incas in Peru in 1532.
Columbian Exchange
The exchange of people, diseases, food, and goods between the New World, Old World, and Africa.
Treaty of Tordesillas
The 1494 agreement that divided the New World between Spain and Portugal.
Mesitzos
The mixed heritage of Europeans and Native Americans resulting from intermarriage.
Vasco Núñez Balboa
The European discoverer of the Pacific Ocean.
Juan Ponce de León
The explorer who sought gold and the mythical "fountain of youth" in Florida.
Battle of Acoma
A 1599 conflict where Spanish forces brutally punished surviving Native Americans.
Pueblo Revolt
The 1680 uprising against Spanish suppression of Native religious customs.
Black Legend
The concept that Spanish conquerors only tortured and murdered Native Americans while also building a vast empire.