Complex sentence: Trade was aided when a branch of the Grand Western Canal from Tiverton to Lowdwells was opened in 1814, with an extension to Taunton in 1838, followed by a branch of the Great Western Railway in 1848.
Split into simpler sentences: Trade was aided when a branch of the Grand Western Canal from Tiverton to Lowdwells was opened in 1814, with an extension to Taunton in 1838. This was followed by a branch of the Great Western Railway in 1848.