Complex sentence: He served as state bank commissioner from 1849 to 1851, was a member of the Harvard University Board of Overseers from 1850 to 1860 and was elected twice Governor of Massachusetts in 1851 and 1852, serving from 1851 to 1853.
Split into simpler sentences: He served as state bank commissioner from 1849 to 1851, was a member of the Harvard University Board of Overseers from 1850 to 1860. Boutwell was elected twice Governor of Massachusetts in 1851 and 1852, serving from 1851 to 1853.