#Setting up timeline 3d to 6000 years how to#

The first sailing ships were used on the Nile River. Since irrigation requires an extensive amount of work, it shows a high level of social organization. The first irrigation systems arose roughly simultaneously in the civilizations of the Tigris-Euphrates river valley in Mesopotamia and the Nile River valley in Egypt. The wheel was also likely invented at this time. Clothing began to be made of woven fabrics. Humans moved from getting their food by foraging to getting it through agriculture. 20,000 to 15,000 years ago: Neolithic Revolutionĭuring the Neolithic Period several key technologies arose together.Evidence of burnt material can be found in caves used by Homo erectus beginning about 1 million (and maybe even 1.5 million) years ago. When humanity first used fire is still not definitively known, but, like the first tools, it was probably invented by an ancestor of Homo sapiens. The tools were made 3.3 million years ago and thus were likely used by an ancestor such as Australopithecus.

Sharp flakes of stone used as knives and larger unshaped stones used as hammers and anvils have been uncovered at Lake Turkana in Kenya. The history of technology begins even before the beginning of our own species.

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#Setting up timeline 3d to 6000 years how to#

COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.

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