Complex sentence: He wrote the bill that established the state's first sinking fund and also encouraged the development of the State Board of Agriculture and served as a member for sixteen years, during which time he accumulated a large estate of lands.
Split into simpler sentences: He wrote the bill that established the state's first sinking fund. He also encouraged the development of the State Board of Agriculture and served as a member for sixteen years, during which time he accumulated a large estate of lands.