Gold was discovered and the US army ignored previous treaty and invaded the region
Number of tribes missed a federal deadline to move so the US army and Custer confront them, unaware of the number of Indians fighting under the command of sitting bull
Indians were looked as wild a blood thirsty US government increased its effort to subdue tribes.
Police tried arresting sitting bull because they thought he was a ghost dancer, and being a ghost dancer meant that you rejected the white man. So they ended up killing sitting bull and that increased the tension in Pine Bridge.
The US army surrounded a band of ghost dancers and demanded them to surrender their weapons. As that happened a fight between an Indian and solider broke and a shot was fire which led to a brutal massacre.
A lot of Indians were killed Massacre ended the ghost dance movement And was the last major confrontation in Americas deadly war against the plan Indians. They both connect because they were both massacres, both between Native American Indians and White settlers over land and natural resources in the west.