First of all let us define the meaning of brand: The American Marketing Association (AMA) defines a brand as a "name, term, design, symbol, or any other feature that identifies one seller's good or service as distinct from those of other sellers. The legal term for brand is trademark. A brand may identify one item, a family of items, or all items of that seller. If used for the firm as a whole, the preferred term is trade name."
Brands are important because people like to feel unique and one of the ways to fell unique is wearing (clothes, watches, glasses, snickers), and show to society that they can afford that particular brand.
If people can show to friends, family and society in general, that they can afford that particular brand they will fell good with themselves.
Here are some of the most famous brands in the world: Coca Cola, Pepsi, Adidas, Nike, Rolex, Seiko, Swatch, Timberland, Gant, Levis, Porsche,, Mercedes-Benz, BMW, Ferrari, Sony, Apple, McDonald´s, Subway, Burger King, KFC and Nokia just to mention a few of them.
I hope that you like it!