 Complete the following phrase:  There are two Oglala Lakota chiefs named American Horse notable in American history. Historian George E. Hyde distinguished them by referring to Chief American Horse the Elder as the son of Old Chief Smoke and the cousin of Red Cloud, and Chief American Horse the Younger as the son of Sitting Bear, and son-in-law to Red Cloud. American Horse the Younger 1840  December 16, 1908 was an Oglala Lakota chief, statesman, educator and historian. American Horse the Younger is notable in American history as a U.S. Army Indian Scout and a progressive Oglala Lakota leader who promoted friendly associations with whites and education for his people. American Horse the Younger opposed Crazy Horse during the 