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Science and Technology [Repost]
![Science and Technology [Repost]](https://pixhost.icu/avaxhome/a9/65/004065a9.jpg)
Science and Technology (American Indian Contributions to the World) by Emory Dean Keoke
English | 31 Jan. 2005 | ISBN: 0816053979 | 160 Pages | PDF | 27 MB
English | 31 Jan. 2005 | ISBN: 0816053979 | 160 Pages | PDF | 27 MB
Science and Technology shows how American Indians developed science and created technology by observing the world around them. The people of Mesoamerica invented the zero, created accurate calendars, and developed writing systems. Native peoples used chemical processes to make chocolate and pottery, devised number systems, and predicted the movements of the stars and planets.