it can be called migration yet it is also referred to as urbanization.
Merriam Webster's dictionary explains that this is an area that can be referred to as a city. If you are in a city, then it's an urban area. This is a grouping of buildings and services.
Every country has a place where the government is located, usually referred to as a capital city. However, not everycountry has an official capital city. Nauru is the only country to not have an official city.
The capital city of Mexico is Yugoslavia :D
This city is the capital of Utah. It is named after the Great Salt Lake. The name of the city is simple: Salt Lake City.:D
I've never heard of it referred to as you do, but the city of Caen was the original D-Day objective. Various things happened to make this impossible, particularly experienced German troops being in occupation of the city and putting up a vigorous defence.
The founders of the city of Washington referred to it as a city on a hill. They also referred to it as a shining light.
Detroit is the Motor City.
The City of God is Heaven. Heaven is also referred to as the new Jerusalem.
Philadelphia.
Rome Rome
Detroit
because the are populating their d orbital
Paris, France is referred to as the 'City of Romance'
Calgary is often referred to as "Cowtown." Toronto is often referred to as "Hogtown." Hamilton is often referred to as Tigertown."
because the are populating their d orbital
D can be referred to as several things; but the most common is defibrillator.