17.10.9: North America
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While most evidence points to human migration through North America to South America, the hallmarks of civilization would arrive later in what are now the United States and Canada. Many of us refer to the areas connected by Panama simply as “The Americas,” but the Panamanian land bridge first linked the two continents only two million years ago. This was prior to human arrival in the Americas, but this separate development meant that North and South American flora and fauna experienced millions of years of separate development and evolution. This distinct development would influence the pace and patterns of human settlement in the Americas a great deal.
The West
The arrival of maize, beans, and squash from northern Mexico helped mark the transition to sedentary culture in the Southwest of what is now the United States. There is some evidence of primitive maize dating back to the middle of the second millennium BCE, but it would not become widespread until about 1000 BCE. A newer, drastically different maize, “ Maiz de Ocho ,” is believed to have been the key to the flourishing of sedentary villages across the Southwest and to the eventual appearance of large pithouse villages around 500 BCE. M aiz de Ocho is better suited to arid conditions and yields larger kernels which are more easily milled. Pithouses , dwellings whose name indicates that its walls were in fact the sides of an excavated pit, became widespread across the Southwest because they were “thermally efficient.” They lost less heat than aboveground structures in winter and, as they were built into the ground, were cooler in the summer. Pithouses remained in wide use in the area until about 700 CE, when more complex exchange networks and social organization led to more diverse settlement patterns. 32
One of these new settlement patterns was the “great pueblo” that appeared as part of the “Chaco Phenomenon” around 900 CE. To deal with unpredictable summer rainfall, the Chaco Anasazi people of New Mexico built three “great houses”—Peñasco Blanco, Pueblo Bonito, and Una Vida,” a large structure situated at natural drainage junctions. The semi-circular town of Pueblo Bonito grew out of a pithouse village to eventually form a semi-circular network of more than 600 rooms and reached a height of five stories along the canyon’s rear wall. The complex’s walls were built of sandstone blocks whose surfaces and cracks were smoothed and shored up by a clay-sand mortar. Construction of the high ceilings also involved complicated ashlar masonry patterns that could be covered with “adobe plaster or matting.” 33
Each of the larger Chaco Canyon sites also had at least one great kiva. Kivas were subterranean gathering places which were used by individual kin groups for work, for education, and for ceremonies. Larger kivas were gathering places for more formal ceremonies where political decisions affecting the entire community were often made.
By 1050 CE, five great pueblos in Chaco Canyon supported a total population of around 5,000 people. While most lived within the relatively compact canyon area, the influence of this populace reached well beyond the immediate pueblo complex. Evidence indicates that the Chaco Canyon people may have had exclusive access to sources of turquoise all over New Mexico and used the stone in their workshops where they produced vases, human effigy vessels, incense burners, bells, trumpets and painted tables. By the early twelfth century, Chaco Canyon’s influence extended to much of northwest New Mexico and southern Colorado, where more than seventy outlying sites contained kivas, Chaco pottery, and similar architecture to what was found in Pueblo Bonito. The Chaco also developed a road system that may have been for the distribution of resources or pilgrimages. Either way, the road construction involved considerable cooperation to craft, at different stages, stairways and ramps carved out of bedrock and other pathways lined with boulders. After 1130 CE, drought and growing population densities led to a 100-year decline of the Chaco sites. By the 1200s most of the pueblos of the Chaco system were empty, their population dispersed and away from the canyon. 34 While this was the height of Anasazi village life, they continued to thrive culturally and are recognized as the precursors of the modern Pueblo peoples.
The Pacific coast
Further west, cultures along North America’s Pacific coast were also sedentary, but did not derive their existence from farming. Instead, multiple Pacific coast cultures took advantage of abundant ocean resources, such as various fish species, sea mammals, timber, shellfish, waterfowl, game, and wild plants. The abundance of these resources often suggests that coastal cultures were less complex than their contemporaries in the interior, but the ravages of climate required tremendous adaptation over time. During the Late Holocene period alone, from 2000 BCE to the present, periodic colder episodes may have led to consequences as disparate as lakeside flooding, lowering of tree lines, drought, and a reduction of available marsh areas. Northwestern Coastal peoples, for example, addressed this volatility by never putting their eggs in one basket. While they may have primarily eaten acorns or salmon, they made sure to always maintain a secondary food source. Further south, the Chumash, a people inhabiting the central and southern California coast, developed ceremonial centers, provinces incorporating several villages, sophisticated “watercraft,” and vibrant trade with the interior. In fact, this trade helped the Chumash avoid scarcities as well. 35
The Plains
The Great Plains represented perhaps the largest area of pre-Columbian North America, but it is also one of the least understood. The Wild West shows of the nineteenth century produced the lasting yet erroneous impression that the Plains Indian culture remained unchanged for centuries. Big game hunters in the Clovis Culture first inhabited the area as early as 13,000 years ago. As big game became extinct around 9000 BCE, Paleo-Indian groups on the plains turned to foraging and fishing in river valleys and to hunting of primarily bison as well as deer and fowl. By 9000 BCE, the Ice Age had left behind a vast expanse of “arid grassland” from Alaska to the Gulf of Mexico, an expanse known as the “ Great Bison Belt .” Long before European explorers introduced horses, people on the Great Plains had developed sophisticated processes of hunting bison on foot that involved some hunters disguised as bison, others orchestrating movements among hunting groups, and others shouting to drive the bison toward pre-selected “traps” or “jumps.” Dozens of bison would fall over a precipice to their deaths. By 6000 BCE, plains hunters had more sophisticated projectiles that could penetrate the skin of a surrounded animal or one that had become stuck in mud or sand. Findings at the Olsen-Chubbock site in Colorado indicate that by 6500 BCE, Paleo-Indians had also begun to butcher seventy-five percent of the animals they killed, which could sustain a group of 100 people for more than a month. 36 Early Plains Archaic (5600 – 3000 BCE) activity, while still largely dependent on bison, shows some increasing reliance on fish, fowl, and berries, possibly indicating warmer and drier conditions that “diminished grass cover throughout the Central Plains.” Middle Plains Archaic peoples (2900 BCE to 1000 BCE) adapted their bison hunting to allow for a more sedentary existence, returning to the same hunting ground year after year, and making much of the bison meat into pemmican (a brick of pounded flesh and fat), that could be stored for seasons when bison were less plentiful (Fagan 123). By 550 CE, the Late Plains Archaic people had fully incorporated the bow and arrow into their hunts, which tended to be less frequent but more productive, often incorporating “mass kill sites” that were used for hundreds of years in some cases. 37
The Eastern Woodlands
The term ‘Middle Woodland’ is occasionally used to refer the period between 200 BCE and CE 400; this coincided with the influence of the Hopewell culture over much of eastern North America. Previous to the Hopewell ascendance, the Adena people built hundreds of burial mounds in and around central Ohio (2300 – 2100 BCE). Accompanying the burials were dozens of types of “grave goods” including spear points, stone pipes, and sculptures of animals and human hands. Hopewell mound building (1000 – 200 BCE) and culture as a whole certainly had antecedents in the Adena and early Woodland cultures as a whole, but the Hopewell tradition stands out in its grandiosity. With their center in the Ohio Valley, the Hopewell created hundreds of hectares of earthworks with regionally specific styles of craftsmanship. Copper, shells, obsidian, and shark and alligator teeth were all used to create personal adornments, containers, pipes, and figurines. Much of this artifact diversity can be attributed to the size and vitality of the Hopewell exchange zone which extended across much of eastern North America from Florida to the Great Lakes. While there is evidence that areas as far away as North Dakota participated in this exchange network, the so-called “core areas” were in the Mississippi, Illinois, Scioto, and Miami river valleys in Illinois and Ohio. As trade picked up, so did the ceremonial and political significance of the artifacts received by local leaders and ultimately included in burial mounds. Some artifacts were buried with their owners at death as symbols of their power in life. The expansion of ceremony through these objects also meant that many of the Hopewellian centers shared physical characteristics such as both platform and conical mounds, structures for cremation, and burial vaults. The local populations who participated in these ceremonies seem to have lived near, but not in, the ceremonial centers themselves in single or multiple family households. Although close to other residents, Hopewell communities were scattered across the area, subsisting through a mix of foraging and horticulture. 38
Cahokia
Other North American mound builders established their center at Cahokia , across the Mississippi River from present day Saint Louis. Cahokia was inhabited from about 700 to 1400 CE. At its peak, the city covered nearly six square miles and 10,000 to 20,000 people lived there. Over 120 mounds were built over time, and most of the mounds were enlarged several times. Houses were arranged in rows and around open plazas, and agricultural fields were cultivated nearby. Other mound centers and communities were located in the contiguous “American Bottom” region. Centralization and the beginning of the Mississippian period happened around 1050 CE, and the transition to the Moorehead phase—marked by decreasing mound building—happened about 1200. 39
What scholars still don’t know about Cahokia is why there was decreased mound building after 1200, during the so-called Moorehead Phase. While scholars usually associate decreased construction with societal decline, recent scholarship suggests that the opposite may be true for Cahokia. Instead of declining, Cahokia might have gone through a transition to a lesser focus on staples and storage and greater focus toward prestige goods and economic power. Their decreased mound building may have coincided with their energy being more focused on controlling trade across the Mississippian Southeast. Scholars see evidence of this shift with an increase in nonlocal raw materials and “prestige goods” at Cahokia during this period, such materials and goods as minerals, igneous rock for axeheads, ceramics, marine shell, quartz crystal, and copper. 40
The Arctic
The Arctic’s harsh climate meant that it was one of the last areas in the Americas to be permanently settled. The first Paleo-Eskimo populations appeared around 4,000 years ago emanating from Eastern Siberia. They were left behind by the original American colonists. The Arctic colonists expanded rapidly across Alaska, through Canada, and into Greenland as they all possessed arctic small tool kits including the important toggle headed harpoons to kill walrus and seal. In general, their evolution was from reindeer hunters to seal hunters, but both types of societies continued to exist side by side.