Contextualizing Period 1

In 1491, Tenochtitlan, the Mexica (Aztec) capital on an island in Lake Texcoco, held perhaps 200,000 people, more than any city in Spain. Within thirty years it lay in ruins, and within a century the population of central Mexico had fallen by something like 90 percent. You cannot explain that collapse by looking only at what Hernán Cortés did in 1519 to 1521. You need to know what kind of societies already existed in the Americas, why Europeans were sailing west at all, and what Portuguese ships had already been doing on the coast of Africa for fifty years. That wider setting is what AP U.S. History calls context, and Period 1 (1491 to 1607) is where you first practice it.

What context means on this exam

A historical development never happens in a vacuum. Contextualization means describing the broader developments that explain why something happened at that time and in that place. It answers the question "what else was going on that made this possible, or likely?"

Context can come from three directions:

• Before. Earlier developments that set up the one you are explaining, or patterns that continued into it. The Spanish conquest of the Caribbean continued methods Castile had used in the Canary Islands and in the war against Muslim Granada.
• At the same time, elsewhere. Developments in other regions that shaped the event. The Protestant Reformation in Europe after 1517 made Spain, France and England rivals for both land and souls in the Americas.
• Larger processes. Long, slow changes in environment, economy or population. The spread of maize farming over thousands of years shaped where Native peoples lived when Europeans arrived.

Context differs from causation, though the two overlap. A cause produces the result; context is the stage on which causes act. The Black Death did not send Columbus west, but the recovery of European population and trade after it is part of why Atlantic voyages found investors in the late 1400s.

The Americas in 1491

People reached the Americas from Asia at least 15,000 years ago, most likely across Beringia, a land bridge exposed when Ice Age glaciers locked up seawater, and possibly also by boat along the Pacific coast. Over the following millennia their descendants spread from the Arctic to Tierra del Fuego and built societies as different from one another as Portugal was from China.

The single most important development in that long history was farming, above all maize (corn). Farmers in southern Mexico domesticated maize from a wild grass called teosinte roughly 9,000 years ago, then bred it for larger cobs over thousands of years. Where maize could grow, it supported dense populations, permanent towns, specialized priests and craftsmen, and rulers who collected tribute. Mesoamerica produced the Olmec, the Maya city-states, and finally the Mexica empire centered on Tenochtitlan (founded 1325), with its causeways, aqueducts and chinampas, artificial garden plots built up from the lake bed. In the Andes, the Inca ruled perhaps 10 million people from Cusco, linked by a road network of about 25,000 miles and run without writing, using knotted cords called quipu for records.

North of Mexico, societies were smaller but just as varied, and none of them was static. The Mississippian city of Cahokia, near present-day St. Louis, had 10,000 or more people around 1100 and the largest earthen mound north of Mexico, but it had largely emptied by 1350. In the Southwest, Ancestral Puebloan communities abandoned Chaco Canyon and Mesa Verde during severe droughts in the 1100s and 1200s and regrouped along the Rio Grande. Somewhere between the 1100s and the 1500s (historians and Haudenosaunee tradition disagree about the date), five nations in present-day New York formed the Haudenosaunee (Iroquois) Confederacy. Topic 1.2 covers how each region's peoples adapted to their environments.

Two facts about 1491 matter most for context. First, the Americas were densely and diversely populated. Estimates for the whole hemisphere run from about 40 million to over 100 million people, and for the land north of Mexico from about 2 million to 18 million. The range is wide because disease often killed people before any European could count them. Second, Native peoples had no immunity to the crowd diseases of Eurasia and Africa, such as smallpox and measles, because they had been isolated from them for thousands of years. That second fact, invisible to everyone in 1491, would shape everything after 1492 (Topic 1.4).

Europe turns outward

Western Europe in 1491 was a poorer, smaller corner of the Eurasian world than China, India or the Ottoman Empire, and several developments pushed it toward the Atlantic.

Recovery and money. The Black Death of 1347 to 1351 killed a third or more of Europe's people. The labor shortage that followed weakened serfdom in western Europe and raised wages, and by the late 1400s population, trade and towns were growing again. Italian, Portuguese and Flemish merchants had developed banking, credit and partnerships that could finance risky voyages.

Stronger monarchies. Kings were pulling power away from nobles and building tax systems and armies. The 1469 marriage of Ferdinand of Aragon and Isabella of Castile joined Spain's two largest kingdoms. In January 1492 they captured Granada, the last Muslim state in Iberia, completing the Reconquista, a war of nearly eight centuries that had trained Castile's nobles to win land, titles and wealth by conquering non-Christians. In March 1492 the monarchs expelled Spain's Jews; in August, Columbus sailed. The same crusading habits went west with him.

Asian trade and its middlemen. Europeans prized Asian spices, silk and porcelain, but those goods reached them through Arab, Ottoman and Venetian merchants, each taking a profit. The Ottoman capture of Constantinople in 1453 is often said to have "closed" the route east, but trade never stopped; the real problem for Atlantic kingdoms was that Venice and Muslim traders controlled it and kept prices high. A sea route around them promised enormous profits.

Tools and ideas. Sailors adapted the compass and astrolabe and built caravels that could sail against the wind (Topic 1.4 covers the technology). The printing press, in use by the 1450s, spread maps, travel accounts and, in 1493, Columbus's own letter announcing his voyage across Europe within months.

Portugal moved first. It took Ceuta in North Africa in 1415, and under Prince Henry "the Navigator" its ships worked down the African coast and settled the Atlantic islands of Madeira and the Azores. Bartolomeu Dias rounded the southern tip of Africa in 1488, and Vasco da Gama reached India in 1498. Spain, shut out of the African route by Portuguese claims, gambled on Columbus's plan to reach Asia by sailing west.

West Africa and the Atlantic before Columbus

West Africa was not a blank space that Europeans "found." The empires of Mali (whose ruler Mansa Musa made a famous pilgrimage to Mecca in 1324, spending so much gold that he depressed its value in Cairo) and then Songhai controlled the trans-Saharan trade in gold, salt and enslaved people. Timbuktu was a center of Islamic learning. Farther south, the Kingdom of Kongo welcomed Portuguese traders in the 1480s; its king was baptized in 1491, and his son Afonso I made Catholicism the religion of the royal court.

Slavery existed in many West African societies, but it usually took different forms from what later developed in the Americas. Captives of war and debtors could be enslaved, worked as farmers, soldiers or servants, and sometimes absorbed into their owners' lineages over generations; the status was not tied to race and was not always inherited. Portuguese traders tapped into existing African networks, buying captives from African rulers and merchants rather than seizing most of them directly.

The decisive precedent was what Portugal built on its Atlantic islands. By about 1500, Madeira and then São Tomé had sugar plantations worked by enslaved Africans. That combination of a profitable export crop, island land that was empty or had been conquered, and imported enslaved labor was the model the Spanish and Portuguese carried to the Caribbean and Brazil after 1492. Topic 1.5 covers how that labor system developed in the Spanish colonies.

Why the period runs from 1491 to 1607

The dates mark a beginning and a turn. 1491 is the last year of separate development: the Americas, Europe and Africa each had their own histories, and the year directs you to study Native societies on their own terms. 1607 is the founding of Jamestown, England's first lasting colony, which opens Period 2.

Between them, the period has a clear arc that you can use as context for any Period 1 question:

1. Encounter (1492 to about 1520). Columbus's voyages, the Treaty of Tordesillas (1494) dividing newly claimed lands outside Europe between Spain and Portugal, and the Spanish conquest of the Caribbean, where the Taíno population collapsed.
2. Conquest and exchange (1519 to about 1550). Cortés and his Native allies defeat the Mexica (1521); Francisco Pizarro defeats the Inca (1532 to 1533); epidemics, new crops and animals transform both hemispheres (Topic 1.4).
3. Colonial systems (1540s onward). Spain builds an empire on silver, Native labor and enslaved Africans, and argues over how to treat Native peoples (Topics 1.5 and 1.6). Spanish expeditions under Hernando de Soto and Francisco Vásquez de Coronado reach the present-day U.S. South and Southwest in 1539 to 1542.
4. Rivals (late 1500s). France, England and the Netherlands, many of them Protestant after the Reformation, challenge Spain through privateering, the defeat of the Spanish Armada (1588), and failed or tentative colonies such as Roanoke (1585 to 1590).

Historians frame this period in different ways, and you should know the main split. An older narrative told it as an "age of discovery," centered on European explorers. Since Alfred Crosby's The Columbian Exchange (1972), many historians stress biological and environmental change, and more recent work, such as Pekka Hämäläinen's Indigenous Continent (2022), argues that Native nations remained the dominant powers across most of North America long after 1492. Each frame produces a different context paragraph for the same question.

Worked examples

Where students lose points

On the exam

Topic 1.1 is a skill topic. Multiple-choice sets on Period 1 can ask which development best explains the context for a source, and short-answer questions ask you to describe a development that led to what a source shows. On the long essay and DBQ, the contextualization point goes to a description of broader developments relevant to the prompt, usually placed in the introduction. Period 1 is about 4 to 6 percent of the exam, but its context (Native diversity, European motives, the Columbian Exchange, Atlantic slavery) is the starting point for Period 2 essays as well.