Complex sentence: His contributions to the Kiowa were honoured by the University of Colorado in 1991 with the awarding of an honorary doctorate, and his 100th birthday was honoured with a ceremony in the Red Buffalo Hall of the Kiowa Tribal Complex in Carnegie, Oklahoma.
Split into simpler sentences: His contributions to the Kiowa were honoured by the University of Colorado in 1991 with the awarding of an honorary doctorate. McKenzie's 100th birthday was honoured with a ceremony in the Red Buffalo Hall of the Kiowa Tribal Complex in Carnegie, Oklahoma.