Complex sentence: Who traveled a lot in journey of his life from a typical undeveloped village in Bihar to USA completed his PhD in year 1969 from University of California under the supervision of Prof John L. Kelley.
Split into simpler sentences: Who traveled a lot in journey of his life from a typical undeveloped village in Bihar to USA. He completed his PhD in year 1969 from University of California under the supervision of Prof John L. Kelley.