Southern and Eastern Asia

5) What are the uses of the Mekong river?

http://www.africanwater.org/mekong_river.htm

6) What part of China do most people live in?

http://en.wikipedia.org/w/index.php?title=File:China_Pop_Density.svg&page

7) Where is Confucianism practiced today?

http://www.uri.org/kids/other_conf.htm

8) How many people in Southeast Asia practice "Islam?"

http://en.wikipedia.org/wiki/Islam_in_Southeast_Asia