Rural-urban migration or drift (Urbanization) refers to the movement of people from rural to urban areas, the corresponding decrease in the proportion of people living in rural areas, and the ways in which societies adapt to this change.

In the advertising world, you’ve probably heard a lot about “return on investment.” How much money you spend on a campaign, and what that expenditure gets you, determines ROI. In other words, your return is how much value your ads bring to your business. Advertising is expensive and tricky....