Intellectual accomplishments of the Sioux?

Question: Intellectual accomplishments of the Sioux!?

What are some intellectual accomplishments of the Sioux Indians!? What technology, etc!. did they have that set them apart from other tribes!?Www@QuestionHome@Com

Best Answer - Chosen by Asker:

Lakota winter count
- Winter counts are histories or calendars
http://wintercounts!.si!.edu/index!.html

Winter count
http://en!.wikipedia!.org/wiki/Winter_coun!.!.!.
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the CAMPFIRE!Www@QuestionHome@Com