By: Andrew Austen, Benton Duncan, and Sophia Hurley In the 1850’s, the gold and silver rush in the Rocky Mountains brought a lot of white settlers to the mountains to find gold or silver. This got in the way of the life the Cheyenne's and the Arapahos tribes. This brought tension to both sides. It was led by John M. Chivington. 700 soldiers attacked. 500 Cheyenne and Arapahos at Sand Creek. 120 Indians were killed. 2/3 of the Indians killed were women and children. WHEN November 29, 1864 When gold and silver were a big part of white settlers lives. The war broke out at dawn. WHERE The war broke out at Ft. Lyon in the Colorado territory. It happened because of the silver and gold rush in the Rocky Mountains and the settlers were disturbing the tribes way of life. A speech barrier The Indians were told to report to a fort to give up their weapons. If they didn’t that would be considered criminals. Indians didn’t understand what the settlers meant so they stayed where they were which caused the attack to happen. It was a heavy lose of life to the Cheyenne Indians. It disrupted the way of life for the Indians. A lot of the elders in the tribe were killed in the battle. The Cheyenne developed into a military society to prevent another attack in the future. It caused the Cheyenne to attack the soldiers at Fort Caspar, Wyoming. An investigation was issued because the soldiers said that they were attacking the Indians for self defense. But witnesses and survivors said otherwise. They said it was a massacre and not an act of self defense. “Sand Creek Massacre.” History Net. Weider History Group, 12 June 2006. Web. 7 Nov. 2011. Weiser, Kathy. “The Sand Creek Massacre.” Legends of America. N.p., Aug. 2010. Web. 7 Nov. 2011. “What Caused the Sand Creek Massacre .” The Sand Creek Massacre. Olympus Films, 5 Mar. 2010. Web. 7 Nov. 2011.