Ancient Civilizations of the Americas

Which crop was fundamental to the food supply of the Maya, Aztecs, and Incas?

• Wheat

• Corn

• Barley

• Rice

How did the Aztecs manage to grow crops in a region with limited land?

• By building terraces

• By creating floating fields on lakes

• By importing soil from other regions

• By using irrigation systems

What was the Inca's solution to farming on steep mountain slopes?

• Building floating gardens

• Growing crops in greenhouses

• Using advanced irrigation techniques

• Carving terraces into the mountainside

What agricultural technique did the Maya use to clear land for farming?

• Slash-and-burn

• Hydroponics

• Terracing

• Irrigation

What is one theory about the decline of the Mayan civilization?

• Economic collapse

• Overpopulation

• A long and severe drought

• Invasion by the Aztecs