Why did different social classes emerge in the early cities? give two examplees

Which social media guideline defines what to do if you find a fabrication on a social media site?

Dunkin' donuts is expanding in several different countries. its stores offer curry doughnuts in india, dulce de leche doughnuts in peru, and cherry brandy doughnuts in germany. this is an example of segmentation based primarily on:

Bea was under a great deal of stress at work, and her health had started to suffer. her doctor treated her using where bea had sensors attached to various parts of her body and watched her vital signs on a computer screen until she learned to relax.