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.
Centennial of the City of Toronto
The Centennial of the City of Toronto was celebrated in 1934, commemorating the incorporation of York into the City of Toronto. The celebrations included numerous events, exhibitions, and commemorations. Of the most modern relevance is the "Toronto's Hundred Years" Publication Committee, which published "Toronto's 100 Years", from which much historical perspective may be found.