Complex sentence: In 1876 she received the degree of A.M., from Lawrence College, Appleton, Wis., where she began her career as a teacher, rising to the position of lady principal while yet in her twenties.
Split into simpler sentences: In 1876 she received the degree of A.M., from Lawrence College, Appleton, Wisconsin. She began her career as a teacher at Lawrence College, rising to the position of lady principal while yet in her twenties.