AP United States History, AP exams, 4–6%

Unit 1: Period 1, 1491–1607

Period 1 covers the Americas before 1492 and the first century of sustained contact among Native American, European, and African peoples. The unit stresses how environment shaped distinct Indigenous societies and how contact produced exchange, conquest, coerced labor, and new racial hierarchies. It is a short unit, but its contextualization payoff on essays is large.

Position: 1 of 9 units
Published weighting: 4–6% in the official framework
Topics covered: 5 topics in this guide

What is covered

Topics inside this unit.

These topics describe the scope students most often review for this part of AP United States History. Treat them as a study checklist rather than an exhaustive list of what a single exam form can sample.

Native American societies before European contact: How maize cultivation, resource availability, and geography produced diverse societies from the Southwest to the Northeast and Great Plains.
European exploration in the Americas: The technological, economic, and religious motives behind Iberian expansion and the competition among European powers that followed.
The Columbian Exchange: Transfers of crops, animals, and pathogens across the Atlantic, and the demographic catastrophe that followed for Indigenous populations.
Spanish colonization and the encomienda system: Conquest, the encomienda labor regime, the shift toward African slavery, and the casta hierarchy that organized colonial society.
Cultural interactions and debates over Indigenous peoples: Mutual misunderstanding, adaptation, and resistance, including the Spanish debate over the treatment of Native peoples exemplified by Las Casas.

Study tips

How to practice Period 1.

Section-specific guidance that follows from how this material is usually tested.

Write a two-sentence contextualization paragraph for 1491 to 1607 that you can adapt to any early essay prompt.
Sort Native societies by environment first; the exam repeatedly asks how geography shaped social organization.
Keep the Columbian Exchange as a two-column card, Old World to New and New World to Old, with one consequence each.

Where this fits

Unit 1: Period 1, 1491–1607 is 1 of 9 units in the AP United States History guide, and it carries a published weighting of 4–6% in the official framework. Use the full guide to balance it against everything else you have to review.

Back to the AP United States History guide Official exam information

Sample Period 1 questions

Practice questions, not yet expert-reviewed

Original practice questions written to the published framework for this section. No expert has reviewed them, and they are not taken from any official exam. Try each one before you open the answer.

Question 1Foundational
Which crop, first domesticated in Mesoamerica, spread northward before European contact and allowed many Native American societies to support larger and more settled populations?
1. AWheat
2. BMaize
3. CRice
4. DSugarcane
Show answer
Answer: B. Maize
Maize cultivation spread from Mesoamerica into the Southwest and later the eastern woodlands, and the harvest surpluses it produced supported permanent villages and denser populations. Wheat, rice, and sugarcane are the tempting distractors because all three were later grown in the Americas on a large scale, but each is an Old World crop that arrived only after 1492.
Key insight: In Period 1 the combination of environment and agriculture explains why Native societies differed so sharply from region to region.
Question 2Foundational
What name do historians give to the transfer of crops, animals, and diseases between the Americas and Afro-Eurasia that followed the voyages of Columbus?
1. AThe Middle Passage
2. BThe Columbian Exchange
3. CThe encomienda system
4. DThe Great Migration
Show answer
Answer: B. The Columbian Exchange
The Columbian Exchange names the two-way biological transfer that carried maize, potatoes, and tomatoes eastward while bringing wheat, sugar, horses, cattle, and lethal pathogens westward. The Middle Passage is the tempting distractor because it also crossed the Atlantic, but it refers narrowly to the forced voyage of enslaved Africans rather than to a biological exchange.
Key insight: The exchange reshaped diets and economies on four continents, and its deadliest cargo was disease.
Question 3Intermediate
Which consequence of European contact was chiefly responsible for the loss of most of the Indigenous population of the Americas within roughly a century of 1492?
1. AOld World epidemic diseases such as smallpox
2. BBattlefield deaths in wars against European armies
3. CFamine caused by the failure of the maize harvest
4. DVoluntary migration of Native peoples to Europe
Show answer
Answer: A. Old World epidemic diseases such as smallpox
Native populations had no acquired immunity to smallpox, measles, and influenza, and epidemics moved along trade and travel routes far ahead of European settlement. Warfare is the tempting distractor because conquest was violent and deadly, but battle losses cannot account for depopulation on the scale historians document across two continents.
Key insight: Disease, not force of arms alone, is the demographic engine of the first century after contact.
Question 4Intermediate
Under which Spanish colonial labor system did the crown grant colonists a claim on the labor and tribute of Native communities in return for a promise of protection and religious instruction?
1. AThe mit'a
2. BIndentured servitude
3. CThe encomienda
4. DThe headright system
Show answer
Answer: C. The encomienda
The encomienda handed individual Spaniards the right to extract labor and tribute from Native villages in exchange for a duty to protect and Christianize them, and it became notorious for its brutality. The mit'a is the tempting distractor because it was also coerced labor in Spanish America, but it was a rotating draft adapted from Inca practice that supplied workers for state projects such as the silver mines.
Key insight: Spanish colonization ran first on coerced Native labor and shifted toward enslaved African labor as Native populations collapsed.
Question 5Advanced
Which Dominican friar argued before the Spanish crown that Native Americans were rational human beings entitled to protection from the abuses of the encomienda system?
1. ABartolomé de Las Casas
2. BJuan Ginés de Sepúlveda
3. CHernán Cortés
4. DJunípero Serra
Show answer
Answer: A. Bartolomé de Las Casas
Las Casas held an encomienda himself before renouncing it, joined the Dominicans, and spent decades pressing Spanish officials to restrain colonists, most famously in the Valladolid debate of 1550 and 1551. Sepúlveda is the tempting distractor because he argued in that same debate, but he defended conquest and forced labor as justified.
Key insight: Even at the height of conquest, Europeans argued publicly over the treatment of Indigenous peoples.

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Unit 1: Period 1, 1491–1607