So these days, people move more than they ever have. 21% of people living in Canada were born somewhere else, as was an astonishing 69% of Kuwait's current population. Migration has become easier because 1. Air travel is pretty cheap, especially if you only take a few plane trips in your life, and 2. it's relatively easy and inexpensive to stay in touch with relatives living far away thanks to Skype, mobile phones, and inexpensive calling cards. Also 3. Even with increased industrialization in the developing world, economic opportunities are often much better in wealthy countries. Remittances, money sent home by people working abroad, are now a huge driver of economic growth in the developing world.