Complex sentence: The easy section from the Mersey to the Dee near Chester, now part of the Shropshire Union Canal, was first used in 1795, and joined to the Chester Canal in 1797.
Split into simpler sentences: The easy section from the Mersey to the Dee near Chester, now part of the Shropshire Union Canal, was first used in 1795. The Mersey to the Dee section was joined to the Chester Canal in 1797.