Question #1: What is the city's megacity ranking ? (How many megacity characteristics does it have ?)

Toronto is ranked 7th largest city with the Metropolitan population of over 6 million in North America. This leads to Toronto being an Alpha city with over 10 megacity's characteristics:

 1. It has Nicknames (Queen city, The 6ix,...)

 2. Active influence and participation in international events and world affair (International film festival).

 

 3. A fairly population of 2,73 million (2016)

 4. Has international Airports (Toronto Pearson International Airport)

 5. An advanced transport system (TTC).

 6. In the west, several international cultures and communities (such as Chinatown, a Little Italy, and other immigrant communities).

 7. An advanced communication infrastructure on which modern trans-national corporations rely.

 8. World-renowned cultural institution (Royal Ontario Museum)

 9. A lively cultural scene (Toronto  Symphony Orchestra, Art gallery of Toronto...)

 10. Several powerful and influential media outlets with an international reach.

 11. A strong sport community...

https://en.wikipedia.org/wiki/Toronto

https://www.britannica.com/place/Toronto

https://www.worldatlas.com/articles/largest-cities-in-north-america.html

https://www.investinontario.com/spotlights/toronto-ontario-north-americas-most-sustainable-city

https://www.reminetwork.com/articles/toronto-sustainable-city-north-america/