Early Civilizations (College Board AP® US History)

Study Guide

Barbara Keese

Written by: Barbara Keese

Reviewed by: Bridgette Barrett

Summary

By the 13th century, the Western Hemisphere had three major civilizations:

  1. Aztecs

  2. Incas

  3. Mayans

Early Aztec People and their culture

  • Aztecs were located throughout much of Mexico

  • They were a civilization that once ruled over hundreds of small states and millions of people

  • They were feared by their neighbors because:

    • Aztec priests killed human prisoners of war

    • they required tribute from groups they conquered

  • The Aztecs fell to Spanish conquistadors in the 16th century

Government

  • Tenochtitlan was the capital city of the Aztec civilization – located near present-day Mexico City

  • The Aztec people formed city-states which were united and led by one emperor

Agriculture

  • The early Aztecs used chinampas, or “floating gardens” for growing crops which had many advantages:

    • Needed limited amount of space in crowded urban areas

    • Provided a rich ecosystem

    • Allowed for easy crop rotation

  • The mild climate and ample water allowed for plentiful harvests to feed its large population

  • A major food staple was corn

  • Other crops included beans, avocadoes, squash, sweet potatoes, peppers, tomatoes, pineapples, and cotton.

Religion

  • Aztecs were Polytheistic

    • Created great pyramids to worship their gods

    • Human sacrifices were part of worship

    • Believed the world had already been destroyed four times

    • Thought human sacrifices to gods prevented more destruction

  • Huitzilopochtli was the chief Aztec god

    • A father figure who guided the people

    • God of war and the sun

    • Often represented in art as an eagle or a hummingbird

Contributions to human development

  • Aztecs developed a 365-day solar calendar

  • Built well-organized cities

Early Incan People and their contributions

  • Early Incas arrived in the Andes Mountains of Peru around 1100 BCE

  • Cusco was the capital and location of the government

  • High altitude and rainfall in the mountains made crop production difficult

  • The Incas strengthened their civilisation through wars and conquests 

  • They mined for gold and produced attractive pieces of jewelry and art

  • The Incan empire was the largest in the world – stretching from Colombia to Chile along the western coast of South America

Map of the Inca road system, Qhapaq Ñan, across South America, highlighting routes in countries like Peru, Bolivia, and Ecuador.
A map of the Incan empire

Government

  • The Incan government was tied to their religion as well as their need for survival

  • Their monarchy embodied the son of the sun god

  • Incas stressed the value of work and punished laziness

Agriculture

  • Early Incas adopted farming techniques that were conducive to the geography of the region, the methods included:

    • using terraces – carved out sections along mountainsides

    • building canals to bring water to their crops

    • crop rotation to increase harvest yields

    • using llama dung, fish heads and seabird guano as fertilizers

    • weather forecasting technique to predict annual rainfall

  • The main crops included potatoes, quinoa, and corn

Religion

  • Religion was a dominant aspect of the Incan culture and gave meaning to their existence

  • They were Polytheistic and believed gods controlled the weather

  • The capital city was the center of the universe

Contributions to human development

  • Suspension bridges

    • Vast road system connecting their territory which improved both travel and communication

Early Mayan People before they disappeared

  • The Early Mayans appeared in Central America approximately 2,400 years ago

  • Mayan cities became deserted around approximately 900 CE

  • Scholars think Mayans left cities because of overpopulation, changes in trade routes, drought, and other factors.

Government

  • City-states had no central government; each was ruled by a single family

  • The Mayans had strict laws with no appeals but victims could pardon convicted people to reduce their punishment

  • Population centers were places of learning and worship

Agriculture

  • Farming was important to the Mayans to be able to feed the large population

    • Poor soil and lack of surface water made farming a challenge

  • Different methods of farming were used to fit the geographic conditions

    • Step farming in the highlands

    • Earthen mounds were used in swampy areas

    • Slash and burn techniques were used in the forest regions

  • Surplus food was stored for those in need

  • Crops included corn, chilies, beans, squash, sweet potatoes

  • People also ate fish, turkey, duck, deer, and monkey

Religion

  • The Early Mayan people were Polytheistic

  • Religion was the center of Mayan life

  • Humans and animals were sacrificed

  • Religious ceremonies included chocolate

Contributions to human development

  • The Early Mayan people contributed to science, technology and mathematics

    • They conceived the mathematical concept of zero

    • They developed a written language using hieroglyphs

    • They were skilled astronomers and predicted eclipses

The importance of corn to early civilizations

  • As civilizations began to settle in the Americas, corn (maize) became an important crop

  • Corn is high in fiber, essential minerals, and a variety of vitamins

  • It can be eaten in a variety of ways:

    • Made into flour for bread

    • Eaten on the cob

    • Used to make food items such as hominy, dumplings, and tamales

  • Corn is easy to store

  • It has a long “shelf-life” and can be used for:

    • feeding livestock, such as horses, cattle, pigs, and chickens

    • making storage baskets and lids

    • creating toys, fans, and bedding

    • fueling fires

    • trading and acting as currency

Examiner Tips and Tricks

How to Use Primary and Secondary Sources

Determine the type of information that is in primary or secondary sources.

  • What details does the prompt ask for?

  • Which details can you find in the primary or secondary source?

  • How does the primary or secondary source help you answer the prompt?

By analyzing the prompt, you can search for details in primary and secondary sources to help you answer it.

Examiner Tips and Tricks

If you receive an essay question with the following prompt:

How did geography affect the agricultural methods that the Aztecs, Incan and Mayan used to support their civilizations?

You will want to find details that tell how Aztec, Incan, and Mayan agriculture had to adapt to their geographic locations. 

  • Aztecs used chinampa to grow crops

    • Limited the amount of space needed in crowded urban areas

    • Provided rich ecosystems

    • Allowed for easy crop rotation

  • Incans created terraces along mountainsides

    • Built canals to bring water to crops

    • Used crop rotation to increase harvest yields

    • Used llama dung, fish heads and seabird guano as fertilizers

    • Developed weather forecasting technique to predict annual rainfall

  • Mayans solved problems of poor soils and lack of surface water

    • Step farming in the highlands

    • Earthen mounds used in swampy areas

    • Slash and burn technique in forest regions

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Barbara Keese

Author: Barbara Keese

Expertise: History Content Creator

Barbara is an experienced educator with over 30 years teaching AP US History, AP Human Geography, and American History to grades 6–11 in Texas. She has developed teacher training, authored curricula, and reviewed textbooks to align with educational standards. Barbara has also served on Texas’ textbook adoption committee and the Round Rock History Preservation Commission, contributing to history education beyond the classroom. She holds a Master’s in Curriculum Development and certifications in History and Gifted/Talented Education. In her free time, she enjoys historical fiction and quilting blankets for veterans.

Bridgette Barrett

Author: Bridgette Barrett

Expertise: Geography Lead

After graduating with a degree in Geography, Bridgette completed a PGCE over 25 years ago. She later gained an MA Learning, Technology and Education from the University of Nottingham focussing on online learning. At a time when the study of geography has never been more important, Bridgette is passionate about creating content which supports students in achieving their potential in geography and builds their confidence.