Complex sentence: Liverpool Street was built as a dual-level station with an underground station opened in 1875 for the Metropolitan Railway, named Bishopsgate until 1909 when it was renamed as Liverpool Street.
Split into simpler sentences: Liverpool Street was built as a dual-level station with provision for the Underground. A station opened in 1875 for the Metropolitan Railway, named Bishopsgate until 1909 when it was renamed as Liverpool Street.