History of Toronto
In 1998, the six municipalities comprising Metropolitan Toronto – East York, Etobicoke, North York, Scarborough, York, and the old City of Toronto – and its regional government were amalgamated into a single City of Toronto (colloquially dubbed the "megacity") by an act of the Government of Ontario. This was despite a municipal referendum in 1997 that was overwhelmingly against amalgamation. Subsequently, Mel Lastman defeated Barbara Hall to become the first elected mayor of the megacity.
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.