Respuesta :
Because in the letter that he has written, this is about his confession of the exhaustion that he has experienced, and a very long list of the hard ships that he had over come. He was the looking glass. One of the two prominent leaders that he mentioned was the looking glass. He is one of the leaders in the war.
Chief Joseph might have mentioned "General Howard" in the first sentence in his speech, because he was his main enemy in the Nez Perce War, which faced Nez Perce people, led by Chief Joseph, against the United States, whose forces were commanded by General Oliver O. Howard.
The Nez Perce War was an episode of the American Indian Wars that faced several groups of the tribe of Nez Perce and the Army of the United States during the summer of 1877.