Complex sentence: In 1850, William Kingston Flesher completed a survey of the township of Artemisia, and the north-south Toronto-Sydenham road and the east-west Durham Road were completed shortly thereafter.
Split into simpler sentences: In 1850, William Kingston Flesher completed a survey of the township of Artemisia. The north-south Toronto-Sydenham road and the east-west Durham Road were completed shortly thereafter.