Complex sentence: He was awarded the top graduate student fellowship, a national Bobbs-Merrill Prize for graduate studies in political science and was later was awarded a post-doctoral Rockefeller Foundation Fellowship for teaching and research in Nigeria.
Split into simpler sentences: He was awarded the top graduate student fellowship, a national Bobbs-Merrill Prize for graduate studies in political science. He later was awarded a post-doctoral Rockefeller Foundation Fellowship for teaching and research in Nigeria.