Complex sentence: Caroline Sealy Livermore (1885--1968) was an American conservationist with emphasis on environment planning and protection mostly in the San Francisco Bay Area both in Marin County and shore areas, during the 20th century.
Split into simpler sentences: Caroline Sealy Livermore (1885--1968) was an American conservationist with emphasis in environment planning and protection. Livermore was mostly in the San Francisco Bay Area in both Marin County and the shore areas, during the 20th century.