Complex sentence: The mounting social unrest of the 1960s drew his attention to educational reform, and in 1970 he was appointed president of his alma mater Oberlin College at the age of 33, one of youngest college Presidents in US history.
Split into simpler sentences: The mounting social unrest of the 1960s drew his attention to educational reform. In 1970 he was appointed president of his alma mater Oberlin College at the age of 33, one of youngest college Presidents in US history.