who won it?
The fight was an overwhelming victory for the Lakota, Northern Cheyenne, and Arapaho.
Battle of the Little Bighorn
The fight was an overwhelming victory for the Lakota, Northern Cheyenne, and Arapaho, who were led by several major war leaders, including Crazy Horse and Chief Gall, and had been inspired by the visions of Sitting Bull ("Tȟatȟáŋka Íyotake"). 
who was the lakota leader who was arrested by the us army Sitting Bull who was he? He was a Hunkpapa Lakota leader who led his people during years of resistance against United States government policies. was he part of any war? Yes, "Battle of the Little Bighorn" was one of them. when did it take place? It took place on June 25–26, 1876.
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Battle of the Little Bighorn [SEP] Introduction
Libbie Custer, Custer's widow, soon worked to burnish her husband's memory, and during the following decades Custer and his troops came to be considered iconic, even heroic, figures in American history. The battle, and Custer's actions in particular, have been studied extensively by historians. Little Bighorn Battlefield National Monument honors those who fought on both sides.