Complex sentence: By Christmas 1854 Ottawa had succeeded in establishing its all season Bytown and Prescott Railway and by 1857 it had already successfully carried passengers, lumber and supplies the 82 kilometre distance by rail for three years to Preston, Ontario on the Saint Lawrence River.
Split into simpler sentences: By Christmas 1854 Ottawa had succeeded in establishing an all season Bytown and Prescott Railway. By 1857 this railway had already for three years successfully carried passengers, lumber and supplies the 82 kilometre distance to Preston, Ontario on the Saint Lawrence River.