From the mid-nineteenth century, the main key suburban regions had been springing up around London as the town (then the largest on the globe) grew to become much more overcrowded and unsanitary.
Ring tengahing abad ka9, widangan suburban kapertama medal ri wawengkon London pinaka kota (raris dados sané pinih ageng ri jagaté) sane sayan ngebekang miwah nénten becik ring kesehatan.