Federation of Stoke-on-Trent

The federation of Stoke-on-Trent was the 1910 amalgamation of the six Staffordshire Potteries towns of Burslem, Tunstall, Stoke-upon-Trent, Hanley, Fenton and Longton into the single county borough of Stoke-on-Trent. The federation was one of the largest mergers of local authorities, involving the greatest number of previously separate urban authorities, to take place in England between the 19th century and the 1960s.

Source: Wikipedia — Federation of Stoke-on-Trent (CC BY-SA 4.0)