July 28, 1914 and ended November 11, 1918
The correct answer to this open question is the following.
According to Chief Luther Standing Bear, the basic Lakota categories for judging behavior were the following.
Education was one of the most important as well as respect. The Lakotas called these good manners "woyuonihan." The meaning in English is something like "full of respect." According to Chief Luther Standing Bear, the door of the tepee was always open to any member of the tribe and people were more than welcome to visit.
Another important aspect was that exaggerated manners were considered insincerity. Lakotas preferred honesty and sincerity. Conversations were an important part of the life of Lakotas. Everybody listened carefully, with no interruptions, and tolerance was a key ingredient in difficult conversations. No loud voices. A low vice was a symbol of respect.
The love of nature was as important as any other conduct.
