Azores is an archipel, a group composed by nine islands formed in the middle of the atlantic.
Whan it has a seat----------------A City is a City when it is INCORPORATED....essentially, it then becomes a Buisness It makes money through taxes (property, Sales, etc.) otherwise, an area not...
Both which and what can be used
A city is a city because it was one the the important places in the world.
The plural form of city is cities.
2,424.32 miles (3,901.55 kilometres)