Complex sentence: The first such chapter was North Carolina Xi at the University of North Carolina at Chapel Hill, which was responsible only to the general convention, the last was Tennessee Omega at the University of the South, in Sewanee, Tennessee.
Split into simpler sentences: The first such chapter was North Carolina Xi at the University of North Carolina at Chapel Hill, which was responsible only to the general convention. The last was Tennessee Omega at the University of the South, in Sewanee, Tennessee.