Municipal government of Toronto
On January 1, 1967, several of the smaller municipalities were amalgamated with larger ones, reducing their number to six. Forest Hill and Swansea became part of Toronto; Long Branch, Mimico, and New Toronto joined Etobicoke; Weston merged with York; and Leaside amalgamated with East York. This arrangement lasted until 1998, when the regional level of government was abolished and Etobicoke, North York, East York, York, and Scarborough were amalgamated into Toronto the "megacity". Mel Lastman, the long-time mayor of North York before the amalgamation, was the first mayor (62nd overall) of the new "megacity" of Toronto, which is the successor of the previous City of Toronto.
Etobicoke
In 1954, Etobicoke Township became a part of the newly formed regional government, the Municipality of Metropolitan Toronto ("Metro"). In 1967, the township of Etobicoke was merged with three small lakeside municipalities — the Village of Long Branch, the Town of New Toronto, and the Town of Mimico — to form the Borough of Etobicoke. The borough was reincorporated as a city in 1984. In 1998, six local municipalities (including Etobicoke) and the Metropolitan Toronto government merged to form the amalgamated city of Toronto.