Context: During the 20th century, the county became increasingly urbanised, particularly the southern part. To the existing county boroughs of Barrow-in-Furness, Blackburn, Bolton, Bootle, Burnley, Bury, Liverpool, Manchester, Oldham, Preston, Rochdale, Salford, St Helens and Wigan were added Blackpool (1904), Southport (1905), and Warrington (1900). The county boroughs also had many boundary extensions. The borders around the Manchester area were particularly complicated, with narrow protrusions of the administrative county between the county boroughs – Lees urban district formed a detached part of the administrative county, between Oldham county borough and the West Riding of Yorkshire.

Question: When did the county become more urbanised?
Answer: 20th century

Question: Which part in particular became urbanised in the 20th century?
Answer: the southern part

Question: When was Warrington added to Lancashire?
Answer: 1900

Question: When was Southport added?
Answer: 1905

Question: When was Blackpool added to the county?
Answer: 1904

Question: When was the county borough of Liverpool created?
Answer: Unanswerable

Question: What was the county borough of St Helens created?
Answer: Unanswerable

Question: What a county bureau that lies in the southern part of Lancashire?
Answer: Unanswerable

Question: Where does Bootle lie in Lancashire?
Answer: Unanswerable

Question: In what year was Oldham made part of Lancashire?
Answer: Unanswerable