Textiles, to archaeologists anyway, can mean woven cloth, bags, nets, basketry, string-making, cord impressions in pots, sandals, or other objects created out of organic fibers. This technology is at least 30,000 years old, although preservation of the textiles themselves is rare in prehistory, so it may be quite a bit older still.
Because textiles are perishable, often the oldest evidence of the use of textiles is implied from impressions left in burned clay or the presence of weaving-related tools such as awls, loom weights, or spindle whorls. Preservation of intact fragments of cloth or other textiles has known to occur when archaeological sites are in extreme conditions of cold, wet or dry; when fibers come into contact with metals such as copper; or when textiles are preserved by accidental charring.
Discovery of Early Textiles
The oldest example of textiles yet identified by archaeologists is at the Dzudzuana Cave in the former Soviet state of Georgia. There, a handful of flax fibers was discovered that had been twisted, cut and even dyed a range of colors. The fibers were radiocarbon-dated to between 30,000-36,000 years ago.
Much of the early use of cloth began with making string. The earliest string-making to date was identified at the Ohalo II site in modern Israel, where three fragments of twisted and plied plant fibers were discovered and dated to 19,000 years ago.
The Jomon culture in Japan - believed to be among the earliest pottery makers in the world - shows evidence of cord-making in the form of impressions in ceramic vessels from Fukui Cave that are dated to roughly 13,000 years ago. Archaeologists chose the word Jomon to refer to this ancient hunter-gather culture because it means "cord-impressed."
The occupation layers discovered at Guitarrero Cave in the Andes mountains of Peru contained agave fibers and textile fragments that were dated to about 12,000 years ago. That's the oldest evidence of textile use in the Americas to date.
The earliest example of cordage in North America is at Windover Bog in Florida, where the special circumstances of the bog chemistry preserved textiles (among other things) dated to 8,000 years ago.
Silk making, which is made from thread derived from insect cases rather than plant material, was invented during the Longshan period in China, ca 3500-2000 BCE.
Finally, one extremely important (and unique in the world) use of string in South America was as quipu, a system of communication composed of knotted and dyed cotton and llama wool string used by many South American civilizations at least 5,000 years ago.