The man in the chapel was named Juan Garrido. Little is known about his childhood except that he was not named Juan Garrido. According to his biographer, Ricardo E. Alegría, an anthropologist in Puerto Rico, he was born in West Africa, probably in the 1480s. His rich, powerful family desired to grow richer and more powerful by selling slaves to Europeans. Alegría suggests that Garrido’s family sent the youth to Lisbon as an agent. Matthew Restall, a Pennsylvania State University historian who has also studied Garrido’s life, is skeptical of this idea—very few Africans, he says, came voluntarily to Europe. Almost certainly Garrido arrived as a slave, Restall believes, one of the tens of thousands of African captives then in the Iberian Peninsula (Spain and Portugal).

  Whether Garrido came in chains or as a representative of his family, he refused to follow anyone else’s plan. Rather than remaining in Portugal, he crossed the Spanish border and went to Seville. He spent seven years there, giving himself a European name along the way. Something of his personality is hinted at by the name he chose: Juan Garrido, which means, more or less, Johnny Good-looking.

  Johnny Good-looking crossed the Atlantic early in the sixteenth century, landing in Hispaniola. As aggressive and ambitious as any other conquistador, a young man with his blood aboil, he quickly attached himself to a local sub-governor, Juan Ponce de León y Figueroa, accompanying him on a mission to take over the island of Puerto Rico. When Ponce de León sank his fortune into an off-kilter hunt for the Fountain of Youth, Garrido joined the futile quest. (Along the way, they became the first people from the opposite shore of the Atlantic to touch down on Florida.) When Spain launched punitive expeditions against Caribe Indians on half a dozen Caribbean islands, Garrido brought his gun. And when Hernán Cortés seized the Triple Alliance, Johnny Good-looking was at his side.

  The alliance is more commonly known as the Aztec empire, but the term is a nineteenth-century invention, and historians increasingly avoid it. It was a consortium of three militarized city-states in the middle of Mexico: Texcoco, Tlacopan, and Tenochtitlan, the last by far the most powerful partner. When the Spaniards arrived, this Triple Alliance ruled central Mexico from ocean to ocean and Tenochtitlan was bigger and richer than any city in Spain.

  As canny a politician as he was a fighter, Cortés was able to foment an assault on the empire by its many enemies and place himself at its head. But despite taking the Triple Alliance emperor hostage in his own palace—a paralyzing surprise to the enemy—the initial assault failed calamitously. Indeed, the Spaniards barely escaped from Tenochtitlan. When all seemed lost, Cortés had a stroke of luck: the accidental introduction of the smallpox virus. Never before seen in the Americas, transmittable with horrific ease, the virus swept through densely packed central Mexico, killing a third or more of its population in a few months.1

  An African man, very possibly Juan Garrido, holds Hernán Cortés’s horse as the conquistador, helmet in hand, approaches Motecuhzoma, paramount leader of the Triple Alliance. The drawing is from Diego Durán’s renowned account of the conquest of Mexico, The History of the Indies of New Spain (c. 1581). (Photo credit 8.1)

  As the Triple Alliance reeled from the epidemic, the Spanish-Indian army attacked the capital a second time in May 1521, with as many as 200,000 troops. Tenochtitlan occupied a Venice-like clump of islands, many of them human-made, on the west side of an eighty-mile-long, artificially recontoured lake. Spiderwebbing from the metropolis was an intricate network of causeways, dikes, dams, baffles, and channels that both kept back floods during the wet season and funneled water around the city during the dry season.

  Cortés’s strategy was in part to avoid the heavily defended causeways into the city by draining and filling the moat-like channels around them, thus creating dry land from which he could assault less-protected areas of the perimeter. During the siege, the attackers repeatedly tore out dikes and piled up stones and earth during the day, and the Triple Alliance repeatedly reassembled the dikes and reflooded the channels at night. On June 30, the Alliance set a trap at the shore entrance to Tenochtitlan’s western causeway, undermining a bridge that crossed a shallow, reed-thick waterway. When the attackers charged across the bridge, wrote the sixteenth-century chronicler Diego Durán, “the entire thing collapsed, together with the Spaniards and Indians who stood upon it.” From hiding places in the reeds shot canoes loaded with men wielding bows, spears, and stolen Spanish swords. Flailing in the brackish water, the Spaniards and their horses were easy prey; Cortés himself was wounded and almost captured.

  As the surviving attackers fled to safety, they heard the boom of an enormous drum—“so vast in its dimensions,” the conquistador Bernal Díaz del Castillo later recalled, “that it could be heard from eight to twelve miles distance.” The Spaniards spun on their heels. Across the water they could see Triple Alliance soldiers dragging Spanish prisoners, still dripping from the watery ambush, to the summit of a great, pyramidical temple. In an act meant to terrify and demoralize, Alliance soldiers and priests ripped open the captives’ chests, tore out their hearts, and kicked the bodies down the temple steps. The next morning they marched another prisoner—“a handsome Sevillian,” Durán wrote—to the edge of the channel and in full view of his friends “ripped him to bits then and there.” When Tenochtitlan fell, Cortés had his revenge. He stood by as his troops and their native allies despoiled the shattered city, slaughtering the men and raping the women.

  Tenochtitlan, seen in a present-day artist’s reconstruction, dazzled the Spaniards when they saw it—the city was grander than any in Spain. Protecting the city was an irregular, ten-mile-long dike (far right in image) that separated the brackish water of the main lake from a new, human-made freshwater lake that surrounded the city and provided water for a network of artificial wetland farms known as chinampas. (Photo credit 8.2)

  Juan Garrido may have been at the ambush or known the sacrificed Spaniards or both. In any case, he was asked by Cortés to build the Chapel of the Martyrs, a monument and graveyard for fallen conquistadors, on the spot where the ambush took place. The assignment was but one of many, for Garrido soon became one of the conqueror’s go-to men as he erected Spanish Mexico City literally atop the wreckage of Indian Tenochtitlan. Johnny Good-looking became a kind of majordomo for the new municipal government; protector of the trees that shaded the highways into town (the records give no reason for the position, but one can guess the trees were being cut for fuel); guardian of the main city water supply (Tenochtitlan, which had no water of its own, was supplied via aqueduct from mountain springs); and town crier—a position, Restall says, that could include the duties of a “constable, auctioneer, executioner, piper, master of weights [responsible for assaying silver and gold], and doorkeeper or guard.” As lagniappe, Garrido accompanied Cortés in 1535 on the latter’s ill-fated attempt to cross Mexico and sail to China—the ultimate goal of Spanish adventurers.

  Garrido’s biggest contribution occurred after Cortés found three kernels of bread wheat (Triticum aestivum) in a sack of rice that had been sent from Spain. The conqueror asked his go-to man to plant them in a plot near the chapel that served as a kind of experimental farm. “Two of them grew,” the historian Francisco López de Gomara reported in 1552,

  and one of them produced 180 kernels. They later turned around and planted those kernels, and little by little there was boundless wheat: one [kernel] yields a hundred, three hundred, and even more with irrigation and sowing by hand.… To a black man and slave is owed so much benefit!

  Wheat was not only desired by roll-eating, cake-munching, beer-guzzling conquistadors, it was a necessity for the politically powerful clergy, who needed bread to celebrate Mass properly. Repeatedly Spaniards had tried to grow T. aestivum in Hispaniola, and repeatedly it had failed in the hot, humid climate. Garrido’s wheat was greeted with joy—in a strange land, it was the taste of home. Soon the golden herringbone tassels of wheat spikelets waved across central Mexico, replacing thousands of acres of maize and woodland. More
than that, Mexican smallholders say, Spaniards carried Garrido’s T. aestivum to Texas, from where it spread up the Mississippi. If this is accurate, much or most of the wheat that by the nineteenth century had transformed the Midwest into an agricultural powerhouse came from an African roadside chapel in Mexico City.

  In planting Cortés’s wheat, Garrido was acting as an agent of the Columbian Exchange. More important, though, he himself was part of the exchange, as were Cortés and the other foreigners.

  Previously in this book, I described researchers’ evolving view of the Columbian Exchange. I first looked at the Atlantic (Chapters 2 and 3), where the most important effects were caused by microscopic imports to the Americas (initially the diseases that depopulated Indian societies, then malaria and yellow fever, which encouraged plantation slavery). Next I treated the Pacific (Chapters 4 and 5), where the major introductions were American food crops, which both helped sustain a population boom and led indirectly to massive environmental problems. In the next section (Chapters 6 and 7), I showed how environmental historians have increasingly come to believe that the Columbian Exchange played a role in the agricultural revolution of the eighteenth century and the industrial revolution of the nineteenth. Both occurred first in Europe, and so this ecological phenomenon had large-scale political and economic implications—it fostered the rise of the West. In all this discussion, I have acted as if humankind were in the director’s chair, distributing other species at will, sometimes being surprised by the results. But to biologists Homo sapiens is a species that like any other has its own distribution and range. Not only did human beings cause the Columbian Exchange, they were buffeted by its currents—a convulsion within our own species that is the subject of this section of the book.

  For millennia, almost all Europeans were found in Europe, few Africans existed outside Africa, and Asians lived, nearly without exception, in Asia alone. No one in the Eastern Hemisphere in 1492, so far as is known, had ever seen an American native. (Some researchers believe that English fishing vessels crossed the Atlantic a few decades before Colón, but the principle holds—one didn’t find communities of Europeans or Africans in Asia or the Americas.) Colón’s voyages inaugurated an unprecedented reshuffling of Homo sapiens: the human wing of the Columbian Exchange. People shot around the world like dice flung on a gaming table. Europeans became the majority in Argentina and Australia, Africans were found from São Paulo to Seattle, and Chinatowns sprang up all over the globe.

  The movement was dominated by the African slave trade—dominated by Garrido, so to speak, rather than by Cortés. For a long time the scale of slavery in the Americas was not fully grasped. The first systematic attempt at a count, Philip Curtin’s The Atlantic Slave Trade: A Census, did not appear until 1969, more than a century after its subject’s extirpation. Partly stimulated by Curtin’s study, David Eltis and Martin Halbert of Emory University, in Atlanta, led a remarkable effort in which scholars from a dozen nations pooled their work to create an online database of records from almost 35,000 separate slave voyages. Its most recent iteration, released in 2009, estimates that between 1500 and 1840, the heyday of the slave trade, 11.7 million captive Africans left for the Americas—a massive transfer of human flesh unlike anything before it. In that period, perhaps 3.4 million Europeans emigrated. Roughly speaking, for every European who came to the Americas, three Africans made the trip.

  The implications of these figures are as staggering as their size. Textbooks commonly present American history in terms of Europeans moving into a lightly settled hemisphere. In fact, the hemisphere was full of Indians—tens of millions of them. And most of the movement into the Americas was by Africans, who soon became the majority population in almost every place that wasn’t controlled by Indians. Demographically speaking, Eltis has written, “America was an extension of Africa rather than Europe until late in the nineteenth century.”2

  In the three centuries after Colón, migrants from across the Atlantic created new cities and filled them with houses, churches, taverns, warehouses, and stables. They cleared forests, planted fields, laid out roads, and tended horses, cattle, and sheep—animals that had not walked the Americas before. They stripped forests to build boats and powered mills with rivers and waged war on other newcomers. Along the way, they collectively reworked and reshaped the American landscape, creating a new world that was an ecological and cultural mix of old and new and something else besides.

  This great transformation, a turning point in the story of our species, was wrought largely by African hands. The crowds thronging the streets in the new cities were mainly African crowds. The farmers growing rice and wheat in the new farms were mainly African farmers. The people rowing boats on rivers, then the most important highways, were mainly African people. The men and women on the ships and in the battles and around the mills were mainly African men and women. Slavery was the foundational institution of the modern Americas.

  The nineteenth century saw another, even larger, wave of migration, this one dominated by Europeans. It changed the demographic balance a second time, so that descendants of Europeans became the majority in most of the hemisphere. Surrounded by people like themselves, this second group of immigrants was rarely aware that it was following trails that had been set for more than three hundred years by Africans.

  Two migrations from Africa were turning points in the spread of Homo sapiens around the globe. The first was humankind’s original departure, seventy thousand years ago or more, from its homeland in Africa’s eastern plains. The second was the transatlantic slave trade, the main focus of this section of the book. The first wave of the human Columbian Exchange, the slave trade was the biggest impetus to the migratory flood that broke through the long-standing geographic barriers that kept apart Africans, Americans, Asians, and Europeans. In this chapter, I focus on two related topics: first, the rise of plantation slavery, which largely drove the forced migration of Africans; and second, the extraordinary cultural mix that slavery inadvertently promoted. The next chapter focuses on the interactions of what became the Americas’ two biggest populations, Indian and African. Largely conducted out of sight of Europeans, the meeting of red and black centered on their common resistance to the European presence in their lives—a rebellion that simmered across the hemisphere, and that had consequences that are felt to this day.

  Johnny Good-looking lived with his family in the center of the whirlpool: teeming, polyethnic Mexico City. A giddy buzz and snarl of African slaves, Asian shopkeepers, Indian farmers and laborers, and European clerics, mercenaries, and second-tier aristocrats, it was a city of exiles and travelers, the first urban complex in which a majority of the inhabitants had their ancestry across an ocean. This was the social world created by the human wing of the Columbian Exchange; Garrido, an African turned European turned American, was a prototypical citizen.

  He had a wife, surely native, surely converted (more or less willingly) to Christianity, and three children, a home in the rich inner city, and the knowledge that he had participated in a pivotal moment in history. Nonetheless, he was a disappointed, unsatisfied man. In 1538, when he was probably in his fifties, he petitioned the court, begging the king to “recompense me for my services and for the little favor your governors have done me, having served as I have served.” His plea apparently went unheard. It says something about that chaotic time and place that this remarkable figure—a slave-turned-conquistador, an African who became a confidant of Cortés, a Muslim-born Christian who married an indigenous-born Christian—should be able to drop from sight. After the petition, no trace of his life has been found. According to Alegría, Garrido’s biographer, he probably died in the next decade, forgotten in the hubbub and tumult of the new world he had helped to bring into existence.

  BAD BEGINNINGS

  It seems fair to observe that the planners of the war did not prepare for its consequences. Scholars argue over its origins, but the goal of the war as fought was to eject a Middle Eastern dictator whom many W
estern leaders viewed as a threat to civilization. After impassioned speeches, they formed a multinational coalition that marched toward the ancient city that was their central objective. After a surprisingly brief battle the allied forces seized control. Unfortunately, they had made no plans for what to do next. The coalition’s military leadership simply declared the mission accomplished and left for home. Only a skeleton military crew was left to face a growing Muslim insurgency in the countryside.

  This was in 1096 A.D., during the First Crusade. Godfrey of Bouillon, appointed to rule newly conquered Jerusalem, had to find some way to support his remaining army, the swarm of monks, priests, deacons, and bishops who had accompanied it, the pilgrims/cannon fodder who had accompanied the religious leaders, and the Venetian merchants who had provided invaluable logistical support. An obvious answer, from the Crusaders’ point of view, was to seize Muslim property. European entities took ownership of entire urban neighborhoods and even cities; Venice fastened onto the port of Tyre, for example, and the Knights of Malta (as they are now known) acquired as much as a fifth of Jerusalem. In the countryside, Crusaders ultimately assembled more than two hundred grand estates, growing olives, wine, oranges, dates, figs, wheat, and barley. Most important in the long run, though, was a sticky, grainy product that the farms’ new masters had never before encountered: al-zucar, as the locals called it, or sugar.

  Sugarcane was initially domesticated in New Guinea about ten thousand years ago. As much as half of the plant by weight consists of sucrose, a white, powdery substance known to ordinary people as “table sugar” and to scientists as C12H22O11. In a chemist’s lexicon, “sugar” refers to a few dozen types of carbohydrate with similar chemical structures and properties. Sucrose is among the simpler members of the group: one molecule of glucose (the type of sugar that provides energy for most animal bodies) joined to one molecule of fructose (the main sugar in honey and fruit juice). Culturally, historically, psychologically, and perhaps even genetically, though, sucrose is anything but simple. A sweet tooth, unlike a taste for salt or spice, seems to be present in all cultures and places, as fundamental a part of the human condition as the search for love or spiritual transcendence. Scientists debate among themselves whether C12H22O11 is actually an addictive substance, or if people just act like it is. Either way, it has been an amazingly powerful force in human affairs.