Complex sentence: He first obtained a bachelor's degree in economics from the University of Massachusetts Amherst and then pursued graduate studies, obtaining a master's degree in international business from the NYU Stern School of Business and a juris doctor from the University of Puerto Rico School of Law.
Split into simpler sentences: He first obtained a bachelor's degree in economics from the University of Massachusetts Amherst. Later on he pursued graduate studies, obtaining a master's degree in international business from the NYU Stern School of Business and a juris doctor from the University of Puerto Rico School of Law.