Final answer:
The warriors who massacred members of the Seventh Calvary in the battle at the Little Big Horn in Montana were led by Sitting Bull.
Step-by-step explanation:
In the battle at the Little Big Horn in Montana, the warriors who massacred members of the Seventh Cavalry were led by the Hunkpapa Lakota chief Sitting Bull. Colonel George Custer led the Seventh Cavalry, which sought a showdown with the Native American tribes defending their lands.