Complex sentence: With the assistance of the school's president, John Mercer Langston, Lewis transferred to Amherst College, where he worked as a waiter to earn his college expenses, and also played football for Amherst for three seasons.
Split into simpler sentences: With the assistance of the school's president, John Mercer Langston, Lewis transferred to Amherst College. Lewis worked as a waiter to earn his college expenses, and also played football for Amherst for three seasons.