7 Continents, 7 Billion People, 7 Books

Challenge rules and more information found here.

The challenge is only 7 books, but they have to be from countries that meet specific requirements.

1) The starting point: 
A book from one of the 7 countries with the most population

2) From most populated to the mountains:
A book from one of the 7 highest countries in the world 

 

3) From high to old:
A book from one of the 7 oldest countries of the world



 4) From old to new:
 A book from one of the megacities of the world




 5) From megacity to migration:
 A book from one of the 7 countries with the most immigrants




 6) From people to money:
 A book from one of the 7 richest - or poorest - countries


 7) From society to environment:
 A book from one of the 7 most rainy or dry countries