Complex sentence: In 1844 the Midland Counties Railway merged with two others into the Midland Railway and by 1848 it had outgrown Carrington Street station and new lines to Lincoln had been opened.
Split into simpler sentences: In 1844 the Midland Counties Railway merged with two others into the Midland Railway. By 1848 it had outgrown Carrington Street station and new lines to Lincoln had been opened.