Complex sentence: McKenzie devoted his professional life to adult education in the United States and the uplift American Indians and Blacks, and was a Professor of Sociology at Juniata College, Huntingdon, Pennsylvania from 1925-1941.
Split into simpler sentences: McKenzie devoted his professional life to the uplift American Indians and Blacks and adult education in the United States. McKenzie was a Professor of Sociology at Juniata College, Huntingdon, Pennsylvania from 1925-1941.