Instruct: Given a question, retrieve relevant documents that answer the question.
Query: What is the oldest known variety of maize?
An influential 2002 study by Matsuoka "et al". has demonstrated that, rather than the multiple independent domestications model, all maize arose from a single domestication in southern Mexico about 9,000 years ago. The study also demonstrated that the oldest surviving maize types are those of the Mexican highlands. Later, maize spread from this region over the Americas along two major paths. This is consistent with a model based on the archaeological record suggesting that maize diversified in the highlands of Mexico before spreading to the lowlands.
Sorghum bicolor, commonly called sorghum () and also known as great millet, durra, jowari, or milo, is a grass species cultivated for its grain, which is used for food for humans, animal feed, and ethanol production. Sorghum originated in Africa, and is now cultivated widely in tropical and subtropical regions. Sorghum is the world's fifth-most important cereal crop after rice, wheat, maize, and barley. "S. bicolor" is typically an annual, but some cultivars are perennial. It grows in clumps that may reach over 4 m high. The grain is small, ranging from 2 to 4 mm in diameter. Sweet sorghums are sorghum cultivars that are primarily grown for forage, syrup production, and ethanol; they are taller than those grown for grain.
Watson Brake is an archaeological site in present-day Ouachita Parish, Louisiana, from the Archaic period. Dated to about 5400 years ago (approx. 3500 BCE), Watson Brake is considered the oldest earthwork mound complex in North America. It is older than the Egyptian pyramids or England’s Stonehenge. Its discovery and dating in a paper published in 1997 changed the ideas of American archaeologists about ancient cultures in the Southeast and their ability to manage large, complex projects over centuries. The archeologists revised their date of the oldest earthwork construction by nearly 2000 years, as well as having to recognize that it was developed over centuries by a hunter-gatherer society, rather than by what was known to be more common of other, later mound sites: a more sedentary society dependent on maize cultivation and with a hierarchical, centralized polity.
Pottery samples recovered from sites in modern Southwestern United States and Northwestern Mexico have tested positive for the ratio of methylxanthines associated with those produced by "Ilex vomitoria". The same study also identified methylxanthines ratios associated with "Theobroma cacao". Neither plants are native to the areas from which the pottery samples were recovered, which suggests trading between areas where those plants are native. The chemical analysis also suggests a possible increase in drinks prepared from cacao after the year 1200, and a decrease in the use of drinks prepared from "Ilex vomitoria". Freshwater shells from Texas and Arkansas have been recovered from Pueblo Bonito, which have been used as possible evidence for the trade of "Ilex vomitoria" from the east. There are also some stands of "Ilex vomitoria" in Mesoamerica, so the exact origins of the "Ilex vomitoria" used to prepare the drinks is currently unknown.
Sorghum sometimes is used for making tortillas (e.g., in Central America). In El Salvador, they sometimes use sorghum ("maicillo") to make tortillas when there is not enough corn.
In addition to the well-known mummies of ancient Egypt, deliberate mummification was a feature of several ancient cultures in areas of America and Asia with very dry climates. The Spirit Cave mummies of Fallon, Nevada in North America were accurately dated at more than 9,400 years old. Before this discovery, the oldest known deliberate mummy was a child, one of the Chinchorro mummies found in the Camarones Valley, Chile, which dates around 5050 BC. The oldest known naturally mummified human corpse is a severed head dated as 6,000 years old, found in 1936 AD at the site named Inca Cueva No. 4 in South America.
After the Hohokam disappeared, Spanish explorers of the 16th century noted the use of canal irrigation in only two areas of the Southwest: eastern Sonora, primarily practiced by the Opata and Lower Pima, and among the Pueblos of northern New Mexico. Irrigation by the Opata and Pueblos had different objectives. In Sonora, with a long growing season, two crops of maize a year were grown in river valleys. The spring crop during the dry season was dependent upon irrigation; the summer and fall crop during the rainy season utilized irrigation to supplement rainfall. The necessity of irrigation probably required a high level of social organization. In New Mexico, with only one crop of maize per year possible, irrigation was supplemental and the lesser dependence on irrigation implies less social organization than in Sonora.
The earliest known artifact with Zapotec writing is a "Danzante" ("dancer") stone, officially known as Monument 3, found in San Jose Mogote, Oaxaca. It has a relief of what appears to be a dead and bloodied captive with two glyphic signs between his legs, possibly his name. First dated to 500–600 BC, this was initially considered the earliest writing in Mesoamerica. However, doubts have been expressed as to this dating as the monument may have been reused. The Zapotec script appears to have gone out of use in the late Classic period.
The earliest dyed flax fibres have been found in a prehistoric cave in the Georgia and date back to 36,000.
The Chinchorro mummies are mummified remains of individuals from the South American Chinchorro culture, found in what is now northern Chile. They are the oldest examples of artificially mummified human remains, having been buried up to two thousand years before the Egyptian mummies. While the earliest mummy that has been found in Egypt dated around 3000 BC, the oldest anthropogenically modified Chinchorro mummy dates from around 5050 BC.
One species, "Sorghum bicolor", native to Africa with many cultivated forms now, is an important crop worldwide, used for food (as grain and in sorghum syrup or "sorghum molasses"), animal fodder, the production of alcoholic beverages, and biofuels. Most varieties are drought- and heat-tolerant, and are especially important in arid regions, where the grain is one of the staples for poor and rural people. These varieties form important components of forage in many tropical regions. "S. bicolor" is an important food crop in Africa, Central America, and South Asia, and is the fifth-most important cereal crop grown in the world.
Mancala is one of the oldest known games to still be widely played today. "Mancala" is a generic name for a family of two-player turn-based strategy board games played with small stones, beans, or seeds and rows of holes or pits in the earth, a board or other playing surface. The objective is usually to capture all or some set of the opponent's pieces. Versions of the game date back to the 7th century, and evidence suggests the game existed in ancient Egypt.
Sumer () is the earliest known civilization in the historical region of southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and Early Bronze ages, and one of the first civilizations in the world along with Ancient Egypt and the Indus Valley. Living along the valleys of the Tigris and Euphrates, Sumerian farmers were able to grow an abundance of grain and other crops, the surplus of which enabled them to settle in one place. Prehistoric proto-writing dates back before 3000 BC. The earliest texts, from c. 3300 BC, come from the cities of Uruk and Jemdet Nasr; early cuneiform script emerged around 3000 BC.
The Malays also have a variant of Mancala board game known as Congkak. The game is played by moving stones, marbles, beads or shells around a wooden board consisting of twelve or more holes. Mancala is acknowledged as the oldest game in the world and can be traced its origin since Ancient Egypt.
As the game dispersed around the globe, every culture has invented its own variation including the Malays.
The earliest known surviving textiles are samples of fiberwork found in Guitarrero Cave, Peru dating back to 8000 BCE. Early fiberwork by the Norte Chico civilization consisted of plant fibers that were intertwined and knotted to form baskets and other containers. Surviving examples of finely spun thread and simple cloths indicate that knowledge of spinning and weaving had already been well-established and developed in the area.
The Taensa were sedentary maize growing agriculturalists as opposed to hunter gatherers and lived in permanent villages with wattle and daub buildings. These structures were up to in length and in height and made from logs plastered in clay with roofs of woven split cane matting. Their village on Lake St Joseph is described as fitting the same dispersed hamlet pattern of the Natchez. It stretched for on the western lake shore with neighborhoods being interspersed with fields and forest. The main precinct had a log palisade, inside of which was the chiefs residence, the temple, and eight other structures. Like other Native Americans in the southeast it also had an open plaza area used for public rituals and functions such as the Green Corn Ceremony and games such as chunkey and the ballgame.
The earliest evidence of human civilization in South Asia is from the Mehrgarh region (7000 BC to 3200 BC) what is now Pakistan. Located near the Bolan Pass, to the west of the Indus River valley and between the present-day Pakistani cities of Quetta, Kalat and Sibi, Mehrgarh was discovered in 1974 by an archaeological team directed by French archaeologist Jean-François Jarrige, and was excavated continuously between 1974 and 1986. The earliest settlement at Mehrgarh – in the northeast corner of the site – was a small farming village dated between 7000–5500 BC.
Early Mehrgarh residents lived in mud brick houses, stored their grain in granaries, fashioned tools with local copper ore, and lined their large basket containers with bitumen. They cultivated six-row barley, einkorn and emmer wheat, jujubes and dates, and herded sheep, goats and cattle. Residents of the later period (5500 BC to 2600 BC) put much effort into crafts, including flint knapping, tanning, bead production, and metal working. The site was occupied continuously until about 2600 BC.[2] The Indus Valley Civilization (c. 3300–1700 BC, flourished 2600–1900 BC), abbreviated IVC, was an ancient civilization that flourished in the Indus and Ghaggar-Hakra river valleys primarily in what is now Pakistan, although settlements linked to this ancient civilization have been found in eastern Afghanistan, and western India. Minor scattered sites have been found as far away as Turkmenistan. Another name for this civilization is the Harappan Civilization, after the first of its cities to be excavated, Harappa in the Pakistani province of Punjab. The IVC might have been known to the Sumerians as the Meluhha, and other trade contacts may have included Egypt, Africa, however, the modern world discovered it only in the 1920s as a result of archaeological excavations and rail road building. Prominent historians of Ancient India would include Ram Sharan Sharma and Romila Thapar.
Sewing needles have been dated to at least 50,000 years ago (Denisova Cave, Siberia) – and uniquely associated with a human species other than modern humans, i.e. H. Denisova/H. Altai. The oldest possible example is 60,000 years ago, a needlepoint (missing stem and eye) found in Sibudu Cave, South Africa. Other early examples of needles dating from 41,000-15,000 years ago are found in multiple locations, e.g. Slovenia, Russia, China, Spain, and France.
The Middle Stone Age (or MSA) was a period of African prehistory between the Early Stone Age and the Later Stone Age. It is generally considered to have begun around 280,000 years ago and ended around 50–25,000 years ago. The beginnings of particular MSA stone tools have their origins as far back as 550–500,000 years ago and as such some researchers consider this to be the beginnings of the MSA. The MSA is often mistakenly understood to be synonymous with the Middle Paleolithic of Europe, especially due to their roughly contemporaneous time span, however, the Middle Paleolithic of Europe represents an entirely different hominin population, "Homo neanderthalensis", than the MSA of Africa, which did not have Neanderthal populations. Additionally, current archaeological research in Africa has yielded much evidence to suggest that modern human behavior and cognition was beginning to develop much earlier in Africa during the MSA than it was in Europe during the Middle Paleolithic. The MSA is associated with both anatomically modern humans ("Homo sapiens") as well as archaic "Homo sapiens", sometimes referred to as "Homo helmei". Early physical evidence comes from the Gademotta Formation in Ethiopia, the Kapthurin Formation in Kenya and Kathu Pan in South Africa.
The earliest known civilization is the Olmec. This civilization established the cultural blueprint by which all succeeding indigenous civilizations would follow in Mexico. Pre-Olmec civilization began with the production of pottery in abundance, around 2300 BCE in the Grijalva River delta. Between 1600 and 1500 BCE, the Olmec civilization had begun, with the consolidation of power at their capital, a site today known as San Lorenzo Tenochtitlán near the coast in southeast Veracruz. The Olmec influence extended across Mexico, into Central America, and along the Gulf of Mexico. They transformed many peoples' thinking toward a new way of government, pyramid-temples, writing, astronomy, art, mathematics, economics, and religion. Their achievements paved the way for the Maya civilization and the civilizations in central Mexico.
The earliest known Egyptian pyramids are found at Saqqara, northwest of Memphis. The earliest among these is the Pyramid of Djoser, which was built  2630–2610 BC during the Third Dynasty. This pyramid and its surrounding complex were designed by the architect Imhotep, and are generally considered to be the world's oldest monumental structures constructed of dressed masonry.
Maize is believed to have crossed the Isthmus of Panama around 5,000 years BCE reaching Colombia and later the Ecuadorian coast. Since then, domestication and evolution of native varieties followed this pattern;
Tortillas made with maize (corn) are the oldest variety of tortilla, and remain very popular in Mexico and Central America.
Maize was the single most important staple of the Aztecs. It was consumed at every meal by all social classes, and played a central role in Aztec mythology. To some of the first Europeans, the Aztecs described maize as "precious, our flesh, our bones". It came in a vast number of varieties of various sizes, shapes and colors; yellow, reddish, white with stripes of color, black, with or without speckles and a blue-husked variant that was considered to be particularly precious. Other local and regional varieties must have also existed but few were recorded. Maize was revered to such an extent that women blew on maize before putting it into the cooking pot so that it would not fear the fire, and any maize that was dropped on the ground was picked up rather than being wasted. One of the Aztec informants of the Spanish Franciscan missionary and chronicler Bernardino de Sahagún explained the practice in the following way:
During the early Late Woodland period (350–750 CE), maize agriculture is rare. A 2010 analysis of a local stalagmite revealed that Native Americans were burning forests to clear land as early as 100 BCE. Maize agriculture became more commonplace during the Middle Woodland 400 BCE–400 CE, which also saw a flowering of Eastern Agricultural Complex, that is, the increased gardening of indigenous seed crops. Maize came from the southwest to the lower Mississippi Valley. Bean cultivation preceded maize in the upper Ohio Valley. The following Late Prehistoric Woodland people approached solving this problem with the development of the "Three Sisters Crop" method or companion seed sowing. As Dragoo explained, environment affected development in ways of human living. Walton C. Galinat researched maize cultivation in the Eastern United States. These studies include terrain altitude deviation (valley vs ridge flats and plateau frost days) daily temperature changes and the number of days for the growing season comparing variety of maize through time. Early varieties of maize needed considerably more growing days than eight-row maize. In New England maize was well established by 1200 CE and distributions of the Southern Dent Pathway established other varieties of maize after 1500 CE. "Maize (corn) did not make a substantial contribution to the diet until after 1150 B.P." wrote Mills (OSU 2003).