Complex sentence: Indeed, at its peak it was one of the busiest junctions in the country with a large engine shed and many sidings, but as the railways went into decline in the 1950s the area was particularly badly hit by closures.
Split into simpler sentences: Indeed, at its peak it was one of the busiest junctions in the country with a large engine shed and many sidings. As the railways went into decline in the 1950s the area was particularly badly hit by closures.