In the 1500s, when Spanish conquistadors appeared, two vast empires, those of the Aztecs and the Incas, dominated Central and South America. Both possessed divine kings, both were fractured by internal dissent, and both quickly succumbed to the Spanish onslaught. The physical remains of all these cultures lay dormant for centuries, until science and curiosity demanded their exploration.

The Inca called their empire Tahuantinsuyu, or Land of the Four Quarters. It stretched 2,500 miles from Quito, Ecuador, to beyond Santiago, Chile. Within its domain were rich coastal settlements, high mountain valleys, rain-drenched tropical forests and the driest of deserts. The Inca controlled perhaps 10 million people, speaking a hundred different tongues. It was the largest empire on earth at the time. Yet when Pizarro executed its last emperor, Atahualpa, the Inca Empire was only 50 years old.

In the wake of Columbus' historic voyage in 1492, expeditions, especially from Imperial Spain, swarmed into Aztec territory. They came in search of gold and souls — gold to enrich the coffers of the Spanish king (and their own), and heathen souls to rescue for Christianity. Within a generation, America's ancient civilizations were crushed. Both the Aztec and Inca Empires collapsed after campaigns lasting just a couple of years. How did they fall so fast? Historians suggest many causes.

In this 7th grade humanities lesson, students prepare tortillas, pico de gallo, and tomatillo salsa after learning about the different agricultural techniques developed by the Mayan, Aztec and Inca civilizations.

By the end of this section, you will be able to:

Describe how Europeans solved their labor problems
Describe the theory of mercantilism and the process of commodification
Analyze the effects of the Columbian Exchange

U.S. History is designed for a two-semester American history sequence. It is traditional in coverage, following a roughly chronological outline, and using a balanced approach that includes political, economic, social, and cultural developments. At the same time, the book includes a number of innovative and interactive features designed to enhance student learning. Instructors can also customize the book, adapting it to the approach that works best in their classroom.