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.
York East
In 1947, it was redefined to consist of the part of the county of York lying south of the township of Markham, east of Yonge Street and north of the city of Toronto. In 1952, it was redefined to consist of the township of East York and the part of North York township bounded south of Lawrence Avenue and east of the town of Leaside and Leslie Street.