Chapter 9 - The Americas: A Separate World

Giant trees

________ developed a heavy cover in certain areas, preventing most sunlight from reaching the ground.

Peru

________ was a hard environment in which to build a civilization.

Agriculture

________ changed people's lives dramatically and permanently in the Americas, as it did in other parts of the world.

vast commercial network

The Olmec appear to have been an affluent people that ruled over a(n) ________ that stretched over Mesoamerica.

poor soil

The Andes are rocky and steep, with ________ in general.

Glaciers

________ encased vast swaths of the earth's surface, trapping massive volumes of water.

Oaxaca

________ is a mountainous and valleyous region in southern Mexico.