Question

Can anybody pls answer these questions:
1- What is the difference between a global city and megacity
2-What types of functions are found in global cities
3- What is an oligopoly
Thx

Answer 1

Oligopoly is a state of limited competition in which a market is shared by a small number of producers or sellers.
A global city has political,economical,& cultural influence over the world.Whereas Megacity just describes a city with over 10 million people.
I am so sry I don't know the functions of it I hope this will help u.