Complex sentence: He studied at the National University of Tucumán, graduating in 1969, and received his PhD in Legal and Social Sciences from the University of Buenos Aires, where he later was a Professor of history and law.
Split into simpler sentences: He studied at the National University of Tucumán, graduating in 1969. He received his PhD in Legal and Social Sciences from the University of Buenos Aires where he later was a Professor of history and law.