Complex sentence: He moved with his parents to Grand Haven, Michigan and attended the public schools, He engaged in mercantile pursuits and was a member of the Michigan State House of Representatives 1850-1852 and a member of the Michigan State Senate in 1856.
Split into simpler sentences: He moved with his parents to Grand Haven, Michigan, attended the public schools, and engaged in mercantile pursuits. He was a member of the Michigan State House of Representatives 1850-1852 and a member of the Michigan State Senate in 1856.