Complex sentence: Oberlin College opened in 1833 as Oberlin Collegiate Institute, in the heavily Yankee northeastern corner of Ohio, in 1837 became the first coeducational college by admitting four women.
Split into simpler sentences: Oberlin College opened in 1833 as Oberlin Collegiate Institute, in the heavily Yankee northeastern corner of Ohio. In 1837 it became the first coeducational college by admitting four women.