Complex sentence: He transferred to the University of California, Berkeley in 1905, became interested in anthropology, and went to work for John C. Merriam surveying middens around San Francisco Bay and on the California coast.
Split into simpler sentences: He transferred to the University of California, Berkeley in 1905. Nelson became interested in anthropology, and went to work for John C. Merriam surveying middens around San Francisco Bay and on the California coast.